Class 6

These TS 6th Class Science Important Questions 7th Lesson Separation of Substances serves as a valuable tool for students to prioritize their studying and revision efforts.

TS 6th Class Science Important Questions 7th Lesson Separation of Substances

Question 1.
What type of mixture is our soil?
Answer:
A natural mixture

Question 2.
Can water be used to separate the components of any mixture?
Answer:
No.

Question 3.
How can you separate rotten fruits from fresh fruits?
Answer:
Hand picking process.

Question 4.
Which property helps in separating the husk from grain?
Answer:
Difference in weights of the husk and grains.

Question 5.
Why sedimentation takes place?
Answer:
Due to gravity.

Question 6.
How does precipitation differ from sedimentation?
Answer:
Precipitation is rapid, whereas sedimentation is a very slow process

Question 7.
Can you have filter papers with different pore sizes?
Answer:
Yes.

Question 8.
Which of the following does sublime, when heated?
(a) camphor
(b) common salt
(c) Iodine
(d) Ammonium chloride
Answer:
Items a, c and d sublime

Question 9.
Which process can be used to remove impurities from water?
Answer:
Distillation

Question 10.
How is butter taken out from milk or curd?
Answer:
By Churning

Question 11.
Which method is better for separating tea leaves from prepared tea, decantation or filtration?
Answer:
Filtration.

Question 12.
What is the reverse of evaporation?
Answer:
Condensation.
(Note : The process of conversion of vapour into its liquid form is called condensation.)

Question 13.
List out the different substances that are used to make the items given in the following table.
(Or)
Define mixtures. Name some of the mixtures, that you have seen, tested in your daily life. List out the different substances that are used to make above said mixtures.
Answer:
Definition: The component having more than one substance is called mixture.

Question 14.
The materials ghee, wax, sand, sugar, salt, haldi, dal, plastic, wood and iron nails are supplied. Answer the following.

(i) Which materials float on water?
Answer:
Wax, plastic and wood float on water.

(ii) Which materials sink in water?
Answer:
Sand, dal and iron nails sink in water.

(iii) Which materials are soluble in water?
Answer:
Sugar and salt are soluble in water.

(iv) Which materials are insoluble in water?
Answer:
Ghee and haldi are insoluble in water.

Question 15.A.
You might have come across some situations where you have to separate some components from a mixture. Write down two examples of such situations.
Answer:
Case 1. Stones are separated from pulses.
Case 2. Husk is separated from wheat flour.

Question 15. B.

(i) Did you able to separate each component from the mixture?
Answer:
Yes.

(ii) Are the methods used to separate the components same in all these instances?
Answer:
No.

(iii) What are the properties of the components that are used in separating them?
Answer:
In case 1, hand picking. The colour difference between the pulses and the stones made it possible to separate them by hand picking. In case 2, sieving, difference in size between the flour particles (very fine) and the husk particles (large).

Question 16.
Can you separate salt from sand by hand picking?
Answer:
No.

Question 17.
What differences in the properties of rice, pulses and stones help us in separating them by the method of hand picking?
Answer:
There are two reasons.

• The size of the stone is different from rice or pulses.
• The colour of stone, rice and pulses are different.

Question 18.
Give some examples of day-to-day life, where the hand-picking method is used.
Answer:

• Separating tomato, green chillis and radish.
• Rotten eggs are removed from fresh eggs.
• Separating pencils and erasers.

Question 19.
A little of the soil is shaken with water in a glass tumbler. It ¡s kept undisturbed for some time. Then mud particles settle at the bottom of the tumbler. Why is it so?
Answer:

• Mud is not soluble in water.
• Mud is heavier than water.
  So mud particles settle at the bottom of the tumbler

Question 20.
(a) Can you separate mud from muddy water using a sieve?
Answer:
No.

(b) How small should be the pores of the sieve to do this?
Answer:
The size of the pores of the sieve should be smaller than the size of the fine mud particles.

(c) Now, you use a cloth as a sieve. Is the water clear after sieving?
Answer:
No, the water is not clear.

Question 21.
How is salt extracted from sea water?
Answer:
Sea water is captured in wide pans and is exposed to air and sunlight. Then water evaporates and the salt is left behind in the pAnswer: The process is called ‘crystallisation.’

Question 22.
What is ‘distilled water’?
Answer:
When water is boiled, some water vapourises. These vapours are collected in a flask and cooled. Then these vapours turn into water. This water is free from impurities. It is called ‘distilled water’.

Question 23.
What are the uses of ‘distilled water’?
Answer:

• The injection powder is first mixed with distilled water. Then this liquid is injected to patients, by doctors.
• In chemical laboratories, distilled water is used during chemical analysis.

Question 24.
In order to separate the components of a mixture, we make use of their difference in colour, shape, size, weight, solubility.
(a) Can we use these features for separating mixtures of powdered salt and camphor?
Answer:
No. However, property of solubility may be used in common salt dissolves in water, while camphor is insoluble in water. Now the salt is recovered from the salt water, by evaporation process.

(b) What other properties can be use?
Answer:
Sublimation. Camphor sublimes. Salt does not sublime.

Question 25.
What is chromatography?
(Or)
Which method is used to separate colours from a mixture of colours?
Answer:
Chromatography is a technique used for separating mixtures of gases, liquids or dissolved substances.

Question 26.
Give an example of chromatography.
Answer:
Ink appears to be made of a simple colour but it is actually a mixture of many colours. The qualitative separation of ink into its component colours can be done using chromatography.

Question 27.
Where do we use chromatography method?
Answer:
Chromatography is used to separate the colours and then identify the components of a mixture. Ex: Ink, green pigment of leaf, dyes, etc.

Question 28.
Describe any four methods which separate the material.
Answer:

• Winnowing – Eg: Separation of husk from the paddy grains
• Hand – picking: Eg: Separation of stones from rice and pulses
• Crystallization – Eg : Separation of soluble substances from the solution.
• Decantation – Eg: Floating substance is separated by leaving the sediment in the container.
• Chromatography – Eg: Separation of colours from different mixtures of colours.

Question 29.
How do farmers separate husk from grains?
Answer:
Farmers separate husk from grains by the method called “Winnowing”.

Question 30.
Write the method you follow to separate
(a) Mud from water
(b) Husk and flour
Answer:
(a) Mud from water : Filtration
(b) Husk and flour : Sieving

Question 31.
What is sublimation ? Give an example.
Answer:
The process in which a substance changes directly from solid to gaseous form and vice-versa is called sublimation. Eg: Sublimation of camphor.

Question 32.
Can you separate salt from salt water, using a filter paper? If not, why?
Answer:
No.
Reason : The particles of salt dissolved in water are so small in size, that they easily pass through the fine pores of the filter paper. So they can’t be separated by filtration.

Question 33.
Rani filtered mud water by using filter paper. You cannot understand how it is possible. Write down some questions which will be asked by you.
Answer:

• How can we separate mud from water?
• is it possible to separa te mud from water?
• What are the tools required to filter mud water?
• Is mud water filtered easily?
• Are there any techniques to filter mud water?

Question 34.
Hemanth purchased green chilli, coriander seeds, tomato, red gram, wheat flour and kept them safely in a bag. While returning he fell and all the items in the bag got mixed. How will he separate?
1. Which material will he separate first?
2. How would he separate tomato and chilli?
3. How would he separate wheat flour?
4. How would he separate coriander seeds?
Answer:

1. First tomato and chilli are separated.
2. By hand picking.
3. Wheat flour is separated by sieving.
4. Coriander seeds can be separated from red gram by winnowing.

Question 35.
What is distilled water? Write the arrangement of apparatus to make distilled water by distillation with a neat labelled diagram.
(Or)
What process do you follow to obtain distilled water on your own? Explain the procedure. Mention the apparatus.
(Or)
Write the procedure and precautions taken in the extraction of distilled water experiment.
Answer:
The water content that is made free from impurities by the process of vapourisation technique is called distilled water.
Preparation of distilled water:

Required apparatus : Two conical flasks, water, plastic tube, bunsen flame, tripod, 2 single holed rubber corks etc.

Precautions:

• Inserting tubes into the rubber holders is done gently.
• Applying heat to the flask should be observed carefully.

Procedure: A conical flask is filled with water and closed with cork having a hole. Take an another conical flask with a cork having a hole and insert another glass tube through it. Connect both tubes with a plastic tube. Water containing flask is heated.

Observation : It is observed that water vapour goes into the empty flask. It turns slowly into water. The water in the second conical flask is called distilled water.

Question 36.
Describe the experiment of sublimation of camphor with a figure.
(Or)
How do you demonstrate the process of sublimation ? What apparatus did you use ?
Answer:
Aim : To observe the sublimation of camphor.

Apparatus : Cotton, glass funnel, china dish,camphor and powdered salt, stand, burner etc.

Procedure : A mixture of camphor and powdered salt is taken in a china dish and covered with a funnel. The dish is placed on a stand. It is heated with a burner.

Observation : When camphor is heated, it transforms into a gaseous form without changing into liquid.
Similarly, on cooling, the gaseous form of a camphor changes directly into a solid without going to the liquid state.

Question 37.
Write the process of separation of husk from grain.
Answer:
Standing on a high platform, the husk and grain mixture is allowed to drop slowly from the flat pan.
As a result the wind carries the husk forward and the grains fall vertically downward. A separate heap of grain is formed.

Question 38.
Which separation method is used to separate the mixture of Suji (Raya) and sugar?
Answer:
The method sieving is used to separate Suji (Rava)and sugar.
The fine and smaller particles of raya pass through sieve holes. The sugar crystals are left on the sieve plate.

Question 39.
Write the experimentation method and precautionary measures to know about chromatography method.
Answer:
Aim : To show the phenomenon of chromatography.
Required materials : Chalk piece, ink, plate, water etc.

Procedure : A stick of white chalk is taken. An ink (blue or black) mark is put around the curved surface of the chalk. A plate is taken and filled with little amount of water. Ensure that the water does not touch the ink mark. The set up is kept undisturbed for sometime.

Observation : It is observed that the chalk piece absorbed water. Water absorption took place upto its tip. Some colours appeared from the ink border. Yellow, red, blue, green etc are seen from the ink mark to tip of the chalk piece.

Question 40.
A mixture of sand, sawdust and salt Is given in a beaker, half-filled with water. The mixture is stirred well and allowed to settle for 10 minutes. Answer the following.

(a) Which substance floats on the water?
Answer:
Saw dust

(b) How can you collect it?
Answer:
Using a perforated wooden spoon.

(c) Which substance settles at the bottom of the beaker?
Answer:
Sand.

(d) How can you collect it back?
Answer:
Filtration

(e) Which substance is dissolved in the water?
Answer:
Salt

(f) How can you get it back?
Answer:
Crystallisation.

Question 41.
Your teacher conducted the following experiment in the classroom.
(a) What is the name of the experiment?
Answer:
Chromatography

(b) What do you observe in the colour on the chalk piece in this experiment?
Answer: Different colours formed from the ink mark, expanded on the chalk.

These TS 6th Class Science Important Questions 6th Lesson Habitat serves as a valuable tool for students to prioritize their studying and revision efforts.

TS 6th Class Science Important Questions 6th Lesson Habitat

I. Conceptual Understanding :

Question 1.
Write about pond habitat and organisms in that surroundings.
Answer:
There are several organisms in a pond. The different regions in the pond with different communities of some organisms are present. This is due to some conditions like availability of different amounts of food, air, light etc.,

Different organisms at different regions :

(a) Above the pond surface : Dragonfly, mayfly and kingfisher living above the surface of the pond.

(b) Pond surface : Organisms like snail, whirling beetle and pond skater live on the surface. The larva of mayfly and dragonfly also live on the surface of pond.

(c) Mid water : Great water boatman, leech and mosquito larva are found in midwater. Fish and crabs also swim around this region.

(d) Pond margins : Several grasses, frogs, cranes, crabs etc., are seen in this region. Fish usually lay eggs here.

(e) Bottom of the pond : This region has plants like Hydrilla and animals like mussels, flatworms and some maggots larva of some insects like fly.

Question 2.
Write about the nature of the bottom of the pond.
Answer:
The bottom of the pond has plants like Hydrilla and animals like mussels, flatworms and some maggots larva of some insects like fly. Light is minimum here, but food, in the form of dead and decaying matter is in plenty.

Question 3.
What are aquatic and terrestrial habitats ?
Answer:
The habitat of water is called aquatic habitat. The habitat of land is called terrestrial habitat.

Question 4.
Write a few lines about desert habitat and the organisms that live in the desert habitat.
Answer:
Desert possesses high temperature and the atmosphere is always dry. Yet, in the adverse atmosphere, many plants and animals are living in the desert. Desert plants and animals are suited to drv conditions and vast temperature differences. Eg : Cactus, acacia, aloevera are plants. Camel, dogs are animals.

Question 5.
What is a habitat ? Name some plants and animals which live in aquatic and terrestrial habitats.
Answer:
Habitat is a dwelling place for plants and animals that gives them optimum conditions of life.

Examples of terrestrial plants: Neem, mango, jasmine, guava, apple, orange, lemon tree, grapes etc.

Terrestrial animals : Tiger, lion, sheep, cow, cat, dog, donkey, monkey etc. Aquatic animals : Fish, turtle, snail, crab, prawn, whale, shark, star fish, insects, snakes etc.

Aquatic plants: Hydrilla, lotus, vallisnaria, pistia, water hyacinth, algae etc.

Question 6.
Tree is a habitat. Explain with examples.
(or)
How do you say that tree is a habitat for many organisms ?
Answer:
Tree gives shelter and food for many animals. So we should consider that tree is a habitat. Birds, monkeys, squirrels, snakes, ants, spiders, caterpillars, moths, bees, wasps, mosquitoes etc are some of the organisms that live on the tree. There are also some smaller plants live on the tree. Eg : Mosses.

Question 7.
What are the animals that share the surface of the pond as habitat ?
Answer:
Dragonfly, mayfly, smaller insects, kingfisher bird etc., share the surface of the pond.

II. Asking Questions and Making Hypothesis :

Question 8.
Your teacher asked you about the surroundings of your home. He confirmed that your home is as a habitat. Can you agree with your teacher ?
Answer:

1. Yes, I can agree with my teacher that my house is habitat.
2. In fact we live in our house, that protects us from heat, cold and rain etc. and it is shelter for us.
3. We keep some animals and birds as pets in our houses.
4. We also grow some plants which give us fruits and vegetables.

Question 9.
Imagine a deer is shifted from its natural habitat forest to another habitat (desert). What will be the effect on it ?
Answer:

1. Deer cannot live in the desert habitat.
2. It will suffer from lack of food, water and hot weather conditions.
3. Dry conditions will trouble it seriously.
4. Deer may die due to dryness and water less and food scarcity.

Question 10.
What type of questions do you ask your teacher to know about desert plants ?
Answer:

1. How can plants grow in desert ?
2. How can plants withstand desert atmosphere ?
3. What type of plants grow in deserts ?
4. Can desert plants give fruits ?

Question 11.
Why shouldn’t we kill the smaller animals and insects ?
Answer:

1. Insects and some other animals help us by cleaning the environment.
2. Some insects eat harmful micro organisms.
3. Some insects and animals help us in good crops yields.
4. Hence we should not kill any animal and insects.

Question 12.
Read the following para. Answer the following questions.
Tree is also a habitat. Birds, Monkeys, Squirrels, Snakes, Ants, Spiders, Caterpillars, Moths, Bees, Wasps, Mosquitoes and some of the algae we usually observe on the trees.

(a) The organisms that are found at the base of tree
Answer:
Snakes, ants, algae.

(b) Organisms appear between the branches.
Answer:
Monkeys, ants, mosquitoes, birds, caterpillar, spiders

(c) Organisms live on the trunk
Answer:
Ants, algae, bees, moths

(d) Organisms live under the bark Answer: Wasps, bees etc.

Question 13.
Write some names of the plants and animals which live in water. Are leaves of all plants growing in the pond similar ? Why?
Answer:
Animals live in water: Fish, crab, snail, pond skater, insects, prawn, snakes etc. Plants live in water: Vallisnaria, lotus, water hyacinth, grass etc.

1. Leaves of plants that live in water are not similar.
2. For example some plants such as Hydrilla have smaller scaly leaves that can withstand the water currents.
3. Some plants such as lotus have larger and wax layer coarsed leaves that enable to float on the water surface.

III. Experimentation and field Investigation :

Question 14.
Collect an aquatic plant say a Hydrilla or Vallisneria. Also collect any land plant. Now compare the two and write your observation in a table.
Answer:
With the instructions of our science teacher we visited the garden and a pond. As we were instructed to get a water plant we picked Hydrilla plant from pond. And we have collected Tulasi plant also. The parts of the two plants are observed. Some differences are seen in their parts. They were tabulated as follows.

IV. Information Skills and Projects :

Question 15.
Read the following.

Snake, cat, lotus, bird, dung beetle, earthworm, prawns. Where is each organism found most often ? Tabulate the information collected from surroundings.
Answer:

Question 16.
We know that tree is a habitat. You go to field and observe a tree. Find out the organisms which are living on different places of the tree. Tabulate the information.

Question 17.
Analyse the information given in the table and answer the following questions.

Question 1.
Fill the boxes with organisms in I, II, III, IV columns.
Answer:
Earth worm – insects — ants – lizards

Question 2.
In which habitat bat is included ?
Answer:
Other place

Question 3.
What are the habitats which are said to be other places ?
Answer:
House, caves etc.

Question 4.
Name the organism which lives in multiple habitat along with snake.
Answer:
Insect, snake, ants.

Question 18.
Observe the given table.

Answer the following questions.

Question 1.
What are the habitats of snake ?
Answer:
In the soil, on the soil, in the water and other areas.

Question 2.
Mention/write other two habitats which are not shown in the table.
Answer:
Forest, garden, house, tree etc.

Question 3.
In the above table, what will be the other habitats/areas, mentioned ?
Answer:
Caves, old houses, polar regions etc.

Question 4.
Like tortoise, mention other two animals which live in two different habitats.
Answer:
Dog, snake.

Write the answers based on the information from the above table.

Question 1.
Name the motile organisms in the pond.
Answer:
Leech, mosquito larva, fish, crab, frog, etc.

Question 2.
Which zone contains high amount of food in the pond ?
Answer:
Pond surface.

Question 3.
List out the plant species which grow in pond ecosystem habitat.
Answer:
Lotus, Pistia, Grass, Hydrilla etc.

Question 4.
Inner / bottom zone of pond consists less species of plants and animals. Why ?
Answer:
Light is minimum in the bottom of pond.

Question 20.
Observe the following table about the living organisms in a pond and answer to the questions given below.

Questions:

Question 1.
Which plants can be seen on the pond surface ?
Answer:
Pistia, Echornia.:

Question 2.
Which animals can be seen in the mid-water ?
Answer:
Whirling beetle, pond skaters, mosquito larvae.

Question 3.
Where can the decomposers be seen in the pond ?
Answer:
Bottom of the pond.

Question 4.
Where can snails and crabs be seen in the pond ?
Answer:
Pond margins.

Question 21.
Read the following para and answer the questions.

We have seen that different organisms live in our surroundings. In these some live on land, in land, in water and on water. Some times most of them live in the same place. Living organisms have different needs.They usually stay in the places where most of their needs are met, that is, they get sufficient food, shelter and other conditions necessary for life. All organisms depend on their surroundings for their needs like food, water, air and shelter.The surrounding which meets the needs of a particular organism in the best manner is the habitat of that organism. Answer the following questions.

Question 1.
What is meant by habitat ?
Answer:
A place for organisms to give maximum needs of life.

Question 2.
On which components of their surroundings the organisms depend ?
Answer:
Food, water, air and favourable weather.

Question 3.
Give an example of an organism which lives on both land and in water.
Answer:
Frog.

Question 4.
Why do all the living organisms live in different places ?
Answer:
Living habits, availability of food and body conditions make organisms live in different places.

V. Communication through Drawing and Model Making :

Question 22.
Draw the diagram of pond habitat and label the different regions of the habitat.

Question 23.
Draw any three plants and three animals of the pond habitat.
Answer:

Question 24.
Draw any three organism belonging to the above the pond surface.
Answer:

Question 25.
Draw a sketch or a pond and the possible animals and plants that would live in the different places of this pond.
Answer:

Answer:
Different organisms at different regions :

(a) Above the pond surface: Dragonfly, mayfly and kingfisher live above the surface of the pond.
(b) Pond surface : Organisms like snail, whirling beetle and pond skater live on the surface. Mayfly and dragonfly also live on the surface of pond.
(c) Mid water : Great water boatman, leech and mosquito larva are found in midwater. Fish and crabs also swim around thh ‘vgion.
(d) Pond margins : Several grasses, frogs, cranes, etc., are seen in this region. Fishes usually lay eggs here.
(e) Bottom of the pond : This region has plants lil rilla and animals like mussels, flatworms and some maggots.

Question 26.
Identify the following plant and write its nam

Answer:
The given plant is Hydrilla. It is a water plant.

Question 27.
All the organisms have right to live in this environment. How do you support this statement ?
Answer:

1. A good unharmed habitat leads to a better life for us.
2. If we harm any organism in the same way we will be harmed directly or indirectly as well.
3. Interdependency of different organisms leads existence of every creature on the earth.
4. If we allow other organisms to live we will be allowed to live safely.
5. Therefore every organism has right to live.

Question 28.
Rani saw a garden and said, “It is a beautiful habitat”. Why did she say so ?
Answer:

1. We enjoy the sight of a brightly coloured flowers or a passing butterfly and birds in the garden.
2. This natural phenomenon make us feel an aesthetic sense.
3. Garden makes us having a true friendship with the nature.
4. The beauty of nature partly lies in the garden.
5. Not only a beautiful habitat but also a habitat for several organisms.

Question 29.
“We cannot live without plants.” Support your answer.
Answer:

1. Plants are the prime useful sources for man. Man obtain oxygen for breath-ing.
2. We get varieties of fruits, seeds, leaves, roots from plants.
3. Plants clean the environment by taking carbondioxide that is released by us.
4. Plants help us to have sufficient rains and give us cool climate.
5. Therefore we cannot live without plants.

Question 30.
Bhashini doesn’t want to disturb squirrels that eat fruits on the guava tree at her house. Why does she do so ?
Answer:

1. We should give a chance to every creature to live in its habitat.
2. We should remember that there is an interdependence of organisms.
3. If we have a good unharmed habitat of any animal of it will lead a better life for us.
4. Guava tree is a habitat for squirrels to obtain food material.
5. Therefore Bhashini doesn’t want to disturb squirrels on guava tree since it is a good habitat for squirrels.

Telangana SCERT 6th Class Hindi Study Material Telangana Pdf 4th Lesson बाज़ार Textbook Questions and Answers.

TS 6th Class Hindi 4th Lesson Questions and Answers Telangana बाज़ार

सुनो-बोलो :

प्रश्न 1.
बाज़ार में क्या-क्या मिलता है ?
उत्तर :
बाजार में पुस्तकें, खिलौने, मिटाइयाँ, चूड़ियाँ, बर्तन, आइसक्रीम आदि मिलते हैं।

प्रश्न 2.
बाज़ार से क्या लाभ है ?
उत्तर :
बाज़ार में कई चीज़ें मिलती हैं। इसलिए हम सब चीज़ों को यहाँ खरीद सकते हैं। इधर-उधर भटकने की जरूूरत नहीं पड़ती। समय तथा शक्ति की बचत होती है।

प्रश्न 3.
गीत गाओ। भाव के बारे में बातचीत करो।
उत्तर :
यह बाज़ार देखो। यह बाजार बहुत प्याग है। इस में सब कुछ मिलता है। यह बाज़ार सब लोगों का हैं।

प्रश्न 4.
अगर घर के पास बाज़ार न हो तो क्या होगा ?
उत्तर :
अगर घर के पास बाज़ार न हो तो हमें चीज़ें खरीदने के लिए इधर-उधर भटकना पड़ता है। बाज़ार टूर होने पर आने-जाने में समय नष्ट होता है। बस, ऑटो के लिए भी धन खर्च कग्ना पडता है।

पढ़ो :

अ. चित्र के आधार पर वाक्य पढ़े। ‘ऋ ‘अक्षर पर ‘○’ लगाओ।

उत्तर :

आ. चित्र देखो। शब्द पढ़ो। इनके वर्ण वर्णमाला चार्ट में पहचानो। ‘○’ लगाओ।
చిత్రం చూడండి. చదవండి. క్రింది చార్టులో వీటిని ‘○’ ద్వారా గుర్తించండి.

उत्तर :

इ. इन्हें पढ़ो।

उत्तर :

ई. ॠ मात्रा जोड़ते हुए पढ़ो।

उत्तर :

लिखो :

अ. सुंदर अक्षरों में लिखो।
అందమైన అక్షరాలలో రాయండి.

उत्तर :

आ. शब्द पढ़ो। लिखो।

इ. अक्षरों को मिलाकर पढ़ो। लिखो।

उत्तर :

ई. रंग भरो। नाम लिखो।

उत्तर :
फलों की टोकरी

अभ्यासकार्य :

1. निम्नलिखित कविता का वाचन कीजिए। प्रश्नों के उत्तर दीजिए :
క్రింది కవిత్వాన్ని చదవండి. ప్రశ్నలకు సమాధానాలు వ్రాయండి.

चूँ-चूँ करती चिडिया आई,
छम-छम करता मोर।
शेर दहाडता दौडा आया,
जंगल में मच गया शोर।।
लाठी लेकर भालू आया,
सबने खेला खेल।।

प्रश्न 1.
चिडिया क्या करती आई?
1) धड-धड
2) चूँ-चूँ
3) छम-छम
उत्तर :
2) चूँ-चूँ

प्रश्न 2.
मोर क्या करता है?
1) छम-छम
2) धड-धड
3) चूँ-चूँ
उत्तर :
1) छम-छम

प्रश्न 3.
कौन दहाडता दौडा आया?
1) वाध
2) मोर
3) शेर
उत्तर :
3) शेर

प्रश्न 4.
जंगल में क्या मच गया?
1) मोल
2) उत्सव
3) शोर
उत्तर :
3) शोर

प्रश्न 5.
भालू क्या लेकर आया?
1) शेर
2) लाठी
3) लकड़ी
उत्तर :
2) लाठी

2. खाली स्थान भरो।

उत्तर :
1. खेत में बैल है।
2. यह फल की टोकरी है।

3. नीचे दिये गये वर्णों और मात्राओं से नये शब्द लिखो।

1. ॠणि
2. बाल
3. कृषि
4. टिकट
5. जीभ
6. ॠतु
7. टब
8. लाना
9. फटा
10. नीला
11. लाभ
12. कान
13. भालू
14. इधर
15. ईसा
16. फिर
17. कब
18. बल
19. नभ
20. अब
21. जल
22. ऊन
23. कान
24. जीभ
25. फूल
26. कृषक

सारांश-సారాంశం :

अर्थ (అర్ధములు) (Meanings) :

These TS 6th Class Science Important Questions 5th Lesson Materials and Things serves as a valuable tool for students to prioritize their studying and revision efforts.

TS 6th Class Science Important Questions 5th Lesson Materials and Things

Question 1.
List out some of the objects from your house which would break and would not broke?
Answer:
Objects that would break : Cup, glass, earthern pots, mirror, plastic chair etc.,
Objects that would not break : Stainless steel glass, steel, plate, iron chair,door, cylinder, cooking vessel etc.

Question 2.
Based on light penetration through the material how many types of materials are there? Give examples for each type that are used in our daily life. (Or) Give examples for
(a) Transparent
(b) Opaque
(c) Translucent
Answer:
(a) Transparent: The material through which we can easily see the objects are said to be transparent.
Eg : Glass, water, polythene paper.

(b) Opaque: The material through which we cannot see the objects are said to be opaque.
Eg: Wood, steel, card board.

(c) Translucent: The material through which we can see the objects but not very clearly are said to be translucent.
Eg : Oil paper, tracing paper.

Question 3.
What are soluble and Insoluble substances? Give examples.
Answer:
(a) Soluble substances : Certain materials dissolve when mixed with water.
These are said to be soluble substances. Eg: Sugar, salt etc.

(b) Insoluble substances : The materials that do not dissolve in water are said to be insoluble substances. Eg: Coconut oil, kerosene etc.

Question 4.
Give four examples each for the substances which sink and float on water.
Answer:
Substances that sink in water : Stone, iron, nail
Substances that float on water : Wood, plastic etc.

Question 5.
Mention any two materials which can dissolve in water.
Answer:
Salt, sugar, chalk powder etc.

Question 6.
Explain solid, liquid and gaseous states with examples.
Answer:

• Solids : Those materials which do not change shape are called solids. Eg: Wood, rock, brick etc.
• Liquids : The materials which change shape are called liquids. Eg : Water, oil, kerosene etc.
• Gases: The materials which change shape and volume are called gases. Eg: Air

Question 7.
List out the following things as transparent, opaque and translucent materials.
(wood, oily paper, glass, steel mirror, plastic)
Answer:

Question 8.
(Water, gold, kerosene, diamond, petrol, alcohol, wood, iron)
Classify the above substances basing on the state of matter.
Answer:
Solids : Gold, diamond, wood, iron
Liquids : Water, kerosene, petrol, alcohol

Question 9.
Write the difference between transparent substances and opaque substances. Give suitable examples for both.
Answer:

Question 10.
Classify the following objects into transparent and opaque.
Glass, plate, book, iron scale, car mirror, steel plate, spectacles, wooden piece.
Answer:
Transparent substances : Glass, spectacles.
Opaque substances: Plate, book, iron scale, car mirror, steel plate, wooden piece.

Question 11.
What are the things made by wood in your home ? Mention their usage.
Answer:
Things made up of wood:

• Chair, door, windows, table etc.
• Chairs are used for sitting.
• Table is used for keeping books and things, windows and doors are used for ventilation and protecting houses.

Question 12.
Can you make a cricket ball with mud or glass?
Answer:
We cannot make a cricket ball with mud or glass because cricket ball is made up of hard and strong material that withstand hard hitting shots. Mud loses soil particles. It can become much hard even though it is dried. Glass easily breaks.

Question 13.
Why do some substances float on the water and some sink in the water? Give example.
Answer:
Substances which have lesser densities compared to the density of water float on water.
Eg: Wood, cork, plastic etc.
Substances which are more denser than water sink in water.
Eg: iron, stone etc.

Question 14.
Deepika made the tomato sink in water, which actually floats on the surface. Imagine how it became possible to her.
Answer:
Deepika made the tomato more denser than its original density. She might have attached another object to tomato to increase its weight and density. Therefore tomato sinks in the water.

Question 15.
List out some Important things from your home. Ask your parents or friends from which material each object may possibly be made of and tabulate them.
Answer:
Aim of the project : To list out the things from my home and the materials with which they are made of.

Question 16.
Name as many things/objects as you can make using the materials given below and tabulate them.
1. Metal
2. Plastic
3. Glass
4. Wood
5. Cotton
6. Leather
7. Ceramic
8. Rock
Answer:

Question 17.
Prepare a list of objects around you and find which of them are transparent and which are opaque. Write them in table.
Answer:
I listed out the following objects from our surroundings. They are :

• Glass jar
• Steel glass
• Water with glass bottle
• Exam pad
• Wood
• Note book
• Polythene cover.

Question 18.
Ask your friends about the names of some objects. List out them.
Classify them into solids, liquids and gases. Make the table.
Answer:
Collected objects : Stone, milk, smoke, water, oil, chalk piece, pen box, cool drink, seeds, kerosene, air in the balloon, book, lemon juice, cv linier gas. white fumes of candle.

Question 18.
Ask your friends about the names of some objects. List out them. Classify them into solids, liquids and gases. Make the table.
Answer:
Collected objects : Stone, milk, smoke, water, oil, chalk piece, pen box, cool drink, seeds, kerosene, air in the balloon, book, lemon juice, cylinder gas, white fumes of candle.

Question 19.
Read the following items. Predict which of them sink or float in water.
Then try to test whether your predictions are correct or wrong by dropping them in a beaker of water. Find and record your observation.
1. tomato
2. brinjal
3. potato
4. iron nail
5. sponge
6. wood
7. stone
8. leaf
9. chalk piece
10. paper.
Answer:
Aim :- To test the given items whether they float or sink in the water.
Procedure :-

Question 20.
Observe the solubility of the following substances.
Do the experiment. Tabulate the results.
(a) sugar
(b) salt
(c) sand
(d) saw dust.
Answer:
Aim – To observe the solubility of the given substances.
Requirements – Four glasses full of water, sugar, salt, sand, sawdust.

Procedure –

• I brought four small glasses and placed them on the table. They are filled with fresh water.
• Then I took small quantities of sugar, salt, sand and saw dust. They are added to the four glasses respectively.
• They are kept on the table undisturbed for half an hour.

Observation – is observed that all the materials in four glasses are not completely soluble in water. The observations are given below.

Question 21.
Write down what do you observe in the activity on ‘soluble or insoluble in water’ using the following objects in your school laboratory?
Answer:

Question 22.
Sugar, salt, saw dust, sand, sponge, iron nail etc.
In the above list we observe that certain materials are soluble or insoubIe, float or sink in water.
Now answer the following questions

(i) Which materials are insoluble?
Answer:
Saw dust, sponge, iron nail

(ii) Which materials are soluble in water?
Answer:
Sugar, salt

(iii) What happens when sponge and saw dust are kept in water?
Answer:
Sponge and saw dust absorbs and water slowly sink.

(iv) Give examples to materials which sink in water.
Answer:
Stone, iron nail

Question 23.
Describe the experiment that you conducted for knowing semi transparency.
Answer:

• A sheet of white paper is taken.
• A trial is made to see a lighted bulb through it. But nothing is seen.
• Then a few drops of oil is poured on that sheet.
• Once again the trial is made to see the lighted bulb through oil applied paper.
• Bulb is seen through the oil paper, but not very clearly.
• These substances are called translucent substances.

Question 24.
Write your observations you made by doing the following activities.

• Mix chalk powder in water.
• Place a piece of candle in water.
• Add some oil drops to a beaker or water.
• Drop an egg in a beaker of salt water.

Answer:
It is observed that all the materials are not completely soluble.

Question 25.
Observe your surroundings. Classify the solids, liquids and gases. Write in a tabular form.
Answer:

Question 26.
Observe the table and write answers to given below questions.
Answer:

Now answer the following questions.

(i) What objects require paint?
Answer:
Door, cycle, mirror

(ii) Mention two objects which are made by same material.
Answer:
Door, mirror, knife etc.

(iii) Choose any one object mentioned in the given table and write necessary materials used for them.
Answer:
Cycle requires iron, rubber and plastic.

(iv) In the given table wherever we mentioned the name metal, write what type of metal it is.
Answer:
Aluminium or non rusting materials.

Question 27.
Answer the following questions.

(i) Why do plastic toy and wood float on water?
Answer:
The density of toy and wood are less than that of water. That is why they float on water.

(ii) Some items float on water even though they have weight. How is it possible?
Answer:
Even though the objects are heavy weight, the depth of water body and density of water make the objects float on water surface.

Question 28.

Read the above table and answer the following questions.

(i) What type of object is glass jar?
Answer: Transparent substance

(ii) Is polyethene cover not transparent? What is transparency?
Answer:
Polythene cover is a transparent substance. The ability of a substance through which we can see objects is called transparency.

(iii) Give example to opaque object.
Answer:
Steel plate, rod, rock, book etc.

(iv) Give example to translucent object.
Answer:
Oil paper, window glass etc.

Question 29.
Observe the following table and answer the questions.

(i) Which substances are used to prepare utensils and bowls?
Answer:
Metal

(ii) What are the things that are prepared by plastic?
Answer: Bags, chairs

(iii) Which substances are used in manufacturing mirror?
Answer: Glass

(iv) What are the things made of wood?
Answer: Door, table etc.

Question 30.
Analyse the following information and answer the questions.

(i) Which objects are made of one material?
Answer:
Pot

(ii) What materials are used for making bicycle?
Answer:
Steel, rubber, iron etc

(iii) Which objects are made of meire than one material?
Answer:
Door, bicycle, towel

(iv) Identify the natural materials in the given table.
Answer:
Clay, Cotton, dye

Question 31.
Study the table given and answer the questions.

(i) Which object is made from foam and rexin ?
Answer:
Sofa

(ii) Name the objects where wood is used.
Answer:
Window, chair, cricket bat

(iii) Which material is used for cricket bat ?
Answer:
Wood, rubber

(iv) Mention the objects prepared using leather.
Answer:
Shoes

Question 32.

According to the above diagram it is concluded that the candle caught the fire even keeping the match stick away from it. But the match stick is placed above the extinguished candle. Give your reason. Explain.
Answer:

• There is a white smoke column rising from the wick of the candle as soon as we extinguish the flame.
• If we bring the burning match stick close to that smoke the wick burns.
• Because the smoke is nothing but the vaporous form of the candle material.
• It enables the wick to burn. The white fumes coming from the wick, help in burning the wick immediately.

Question 33.
Plastic bags are dangerous for life. Write consequences that occur due to over usage of plastic.
Answer:

• Plastic pollution affects animals and man.
• When plastic bags are burnt they release toxic gases into the air.
• Once plastic bags become bitter they find their way into water bodies, fertile soil, parks, fields etc.
• The decomposition or degradation of plastic takes about 400 years.
• Thus everyone should think to minimise using plastic bags.

These TS 6th Class Science Important Questions 4th Lesson What Do Animals Eat? serves as a valuable tool for students to prioritize their studying and revision efforts.

TS 6th Class Science Important Questions 4th Lesson What Do Animals Eat?

Question 1.
Define the following. Give examples.
(a) Herbivores
(b) Carnivores
(c) Omnivores
(Or)
How many types of animals are there on asis of their food habit?
(Or)
Write down the modes of getting food mais.
Answer:
(a) Herbivores: Animals that depend oni’ on plants for food are called herbivores.
Eg: Sheep, cow, goat

(b) Carnivores: Animals that depend on other animals for food are called
Carnivores. Eg: Lion, tiger, dog.

(c) Omnivores: AnimaIs that take food from plants and animals are called
omnivores. Eg: Man, bear.

Question 2.
Write a few lines about skaters. How do they capture the food?
Answer:

• Pond skaters are the insects which feeds on other insects.
• We can find pond skaters near a pond.
• They move quickly from one side of the pond to another to catch an insect that falls in water.
• They detect ripples produced in water by any other insect trapped on the outer surface.
• They compare the ripples on the opposite side of the pond, caused by legs of the insect struggling to move out, calculate the distance and sets out to grab it.

Question 3.
Can we call the crows as natural scavengers? (Or)
How do the crows help us cleaning the environment?
Answer:
Crows that live in our surroundings usually eat waste and rotten food material dead animal etc. They keep our surroundings clean in this manner. So they are called natural scavengers.

Question 4.
Write a few lines about rumination of herbivores. (Or)
How does the cow collect its food ? Write the process of digestion in it.
Answer:
Animals like cows, chew food very fast and swallow and store it in a part of their stomach. After sometime they take food material back from the stomach to the mouth and chew it again. This process is called “rumination”.

Question 5.
Do you know about nocturnals ? Write about them.
Answer:
Some animals search for their food only at night. Cockroaches, desert lizards, rats, owls, bats, moths, crickets etc., get their food at night only. During day time they hide in dark places. These type of animals are called “nocturnals”.

Question 6.
What are the ways by which animals take their food in?
Answer:
Sucking, licking, pecking, chewing, peeling, swallowing are all the ways by which animals take their food in.

Question 7.
Prepare a food chain by using the following animals. (Lion, Grass, Deer)
Answer:
Grass → Deer → Lion

Question 8.
Write the differences between Herbivores – Carnivores
Answer:

Question 9.
Describe one food chain with examples.
Answer:
Grass → Insects → Frog → Snake → Hawk

• Grass is a primary producer. It gets food naturally. They prepare their food on their own.
• Insects are primary consumers. They feed on plants.
• Frog feeds on insects. Frog is considered a secondary consumer.
• Snake eats frogs. Snake is a tertiary consumer in the food chain.
• Hawk is the top most consumer that eats snake.

Question 10.
Name some animals which use tongue for taking the food.
Answer:
Frog, lizard, garden lizard etc.

Question 11.
Make a food chain with these organisms.
Grass, Wolf, Goat.
Answer:
Grass → Goat → Wolf.

Question 12.
Write food habits of four animals and compare each other.
Answer:

Question 13.
Explain how woodpecker and parrot get their food.
Answer:
Woodpecker:

• The food of woodpecker consists of insects, nuts, seeds, ants etc.
• It has sharp, hard and long beak to collect food.
• Woodpeckers sometimes drill and make holes in the bark of tree trunks to collect the insects. These birds are generally called omnivores based on food habits.

Parrot:

• Parrots are also omnivorous. They eat both small insects/meat and fruits.
• They use their hooked beak to collect the food.

Question 14.
How do bats search food material in the night?
Answer:

• Bats are not blind. But at night their ears are more important than their eyes.
• As they fly they make ultrasonic sounds.
• The returning echoes give the bats information about the food.
• This system of finding prey is called echo location.

Question 15.
What is a food chain ? Write any three food chains present in your surroundings.
Answer:
Food chain: Group of organisms each dependent on the next as a source of food is called food cham.
Eg: Grass → grasshopper → garden lizard
Plants → goat → man
Insects → frog → snake

Question 16.
Can you imagine the wonder world of ants?
(Or)
What do you learn from ants?
Answer:

1. Ants do a lot of things. Their colony has large ant forces to do the work.
   There are mainly workers, soldiers, female and male ants.
2. The workers collect and maintain food stock for others in the colony along with several other duties.
3. Just as we keep cows for milk, ants keep a type of insect called aphids.
4. Ants are known for their discipline.

Question 17.
What happens if any organism disappears from food chain?
Answer:

1. If any organism disappears from the food chain, then the organisms in the next trophic level dependent on these organisms will die due to unavailability of food.
2. The population of organisms in the below trophic level will increase.

Question 18.
What will happen if leaches lack suckers?
Answer:
Leaches obtain their food by sucking. Naturally their food is blood of animals.
If suckers are absent leaches cannot get their food.

Question 19.
Rat → Cat → Dog
If cat is eliminated from the above food chain what consequences occur?
Answer:
If cat is eliminated from the given food chain the following consequences will occur.

1. Rat population will increase. As a result, crops are destroyed by rats. When crops are destroyed food production ultimately will decrease. Therefore people may suffer from food scarcity.
2. Elimination of cat will lead to struggle in the dog’s population. But dogs may go for another prey such as other animals meat. Some how they may struggle if they depend completely on cat for food.

Question 20.
You can see many animals in your surroundings. Discuss them with your friends. Make a list of what they usually eat and also write down what they usually do to find their food. Keep adding to this list as you observe animals around you everyday.
(Or)
Animals identify their food by sense, smell, sight, hearing, taste and touch. Give one example for each sense.
(Or)
Prepare a list of any 8 animaIs I birds which you have seen in your surroundings and their food habit.
Answer:

Question 21.
Think about any three animals and their food habits, tabulate information about food groups on which they feed.
Answer:
There are three food groups namely plants, animals and the third group both plants and animals. We can make the following table based on the food groups with suitable examples.

Question 22.
Find out the body parts of the given animals and birds which help in collecting or capturing food.
1. Hen
2. Cow
3. Dog
4. Frog
5. Snake
6. Man
7. Lizard
8. Vulture
9. Lion
10. Humming bird
You have to visit the surroundings or watch the animal environment related channels or visit internet to get accurate information. (Or) Complete the following table.

Answer:

Question 23.

Write any four food chains of your choice.
Answer:

• Grains → Rat → Snake → Eagle
• Grass → Deer Tiger
• Grass → Sheep → Tiger
• Grass → Cow → Lion

Question 24.

(i) Which birds are “Carnivores”?
Answer:
Vultures

(ii) Which bird has sharp claws and why do they use them?
Answer:
Vultures have sharp claws to tear the flesh.

(iii) What is the difference between vulture and parrot, in collecting food?
Answer:
Vulture is carnivorous. Parrot is omnivorous.

(iv) Why is beak long and strong in woodpeckers?
Answer:
To remove layers of bark and eat ants and pets.

Question 25.

(i) Make two food chains by using above information.
Answer:
Rabbit → Man → Tiger
Rat → Cat → Dog

(ii) Name any two animals that eat plants.
Answer:
Cow, goat

(iii) What do the dog and tiger eat?
Answer:
Meat

(iv) Give two examples of omnivores.
Answer:
Crow, human

Question 26.
Observe the following table and answer the questions given below.
Answer:

(i) Which food group members have less advantage in finding food? Why do you think so?
Answer:
Carnivores. Because they depend on only animals for food.

(ii) Give examples for herbivores.
Answer:
Cow, buffalo, goat, rabbit

(iii) Write down the example for animals which eat both plants and animals.
Answer:
Human beings, dog, cat

(iv) Write down what happens if all the animals eat only plants.
Answer:
Plants number will decrease. Animals will struggle from lack of oxygen.

Question 27.
Observe the given food web and answer the following questions.

(i) Write food chain starting with grass.
Answer:
Grass → Deer → Fox

(ii) Which animal consumes more number of other animals?
Answer:
Tiger and lion

(iii) Which animal stands as herbivore?
Answer:
Deer

(iv) How many other animals use hen as a prey?
Answer:
Four animals

Question 28.
Name of the plants and its parts from which we get different kinds of food ingredients we use in daily food.
Answer:

(i) Which animals use the tongue for food collection ?
Answer:
Frog, wall lizard.

(ii) Which body part is useful for blood sucking in leech?
Answer:
Suckers

(iii) Aves collect the food with the help of
Answer:
Beak

(vi) Ducks have teeth in the mouth like cow and lion ? But what is the difference in the food collection ?
Answer:
Teeth in duck are used as filters. But in cow and lion they are used for eating food.

Question 29.

(i) What are the types the organisms depending on food habits ?
Answer:
Herbivores, Carnivores, Omnivores

(ii) What are omnivores ?
Answer:
Animals depending on plants and animals.

(iii) Frog, deer, hen belong to
Answer:
Omnivores

(iv) Give the examples for carnivores.
Answer:
Fox and tiger

Question 30.
Read the following table and answer the questions.

(i) Why are rabbit and deer called herbivores ?
Answer:
They eat only plant parts.

(ii) Give two more examples to carnivores.
Answer:
Tiger, vulture, cat, fox

Question 31.
Herbivores eat plants. Eg : Rabbit
Carnivores eat other animals. Eg : Lion
Omnivores eat both plants and animals. Eg : Human being
(i) Give examples of Herbivores and Carnivores.
Answer:
Rabbit, sheep, goat, cow etc., are herbivores.
Tiger, lion, fox, wolf etc., are carnivores.

(ii) Write the difference between lion and human being.
Answer:
Lion is a carnivore.
Human being is an omnivore.

Question 32.
Classify the animals given based on the type of food they take.
Tiger, Deer, Cow, Lion.
Answer:

Question 33.
Observe the following diagram. What does it explain ?
Answer:
The given picture tells us the food chain in pond.
We can see that eggs and larvae are eaten by fish and frogs.
Fish and frogs are food for a crane.
When crane dies its body will be decomposed by microbial organisms.

Question 34.
Draw the diagrams of beaks of a. Eagle b. Sparrow c. Duck d. Hen. Write their food material.

Answer:
a. Eagle’s food material is snake, rats, chicks.
b. Sparrow’s food is grains and small insects.
c. Duck’s food material is grains, small fish
d. Hen feeds on grains and small insects.

Question 35.
See the following. Draw connections to show which animal is eaten by whom. (Or) How does the food web form?

Or
Draw any one food chain.
Answer:

Question 36.
Prepare a food chain by filling the blanks in the given flow chart.

Answer:

Question 37.
Draw the diagram of any one omnivore.
Answer:

Question 38.
Draw a food chain from below given animals.
Frog, Insect, Eagle, Snake.
Answer:
Insect → Frog → Snake → Eagle

Question 39.
I live on both land and in water. Who am I ? How do I collect the food?
Answer:
Frog lives on both land and in water. Hence it is called an amphibian. Frog collects the food with its long sticky tongue.

Question 40.
How do you appreciate the difference in beaks of birds, to suit their food collection?
Answer:

• Birds in different areas depend on type of food material available in their places.
• Different birds are able to collect food with their beaks.
• Beak of one bird is different from beak of another bird. This make them to collect specific type of food.
• Some birds use their beak for collecting different food material.
• Even though birds have only beak to collect the food they show their capacity of food collection only through beaks.

Question 41.
Which body parts are used by lion to collect and eat food?
Answer:
Fore limb and its claws for killing the prey, sharp canine teeth for tearing the flesh.

These TS 6th Class Science Important Questions 13th Lesson Learning How to Measure are crafted to align with the curriculum, ensuring students are well-prepared for assessments.

TS 6th Class Science Important Questions 13th Lesson Learning How to Measure

Question 1.
Who created the metric system of measurement?
Answer:
The French

Question 2.
What is the Si unit of length?
Answer:
Metre.

Question 3.
Arrange the following lengths in their increasing magnitude:
1 metre, 1 centimeter, 1 kIlometer, 1 millimeter
Answer:
Increasing order of magnitude:
1 mm; 1 centimeter, 1 kilometer, 1 metre.

Question 4.
We often make an error ¡n reading a scale. What is it?
Answer:
Parallax error.

Question 5.
Mention a few conventional ways for rough measurements.
Answer:
Stride, hand – span, foot – span, cubit etc.

Question 6.
What are the fundamental units to measure the solids and liquids when you purchase from the market?
Answer:
We use grams, kilograms and quintals for measuring solids.
We use millilitres (ml) and litres for measuring liquids.

Question 7.
What do we use to measure the area according to need and requirement of the situation?
(Or)
What are the units generally used to measure the areas?
Answer:
We use m² (square metre), mm² (square millimeter), foot² (square foot), cm²
(square centimeter) etc., to measure areas according to need and requirement of the situation.

Question 8.
How can you decide the size of two sheets of unequal size – one bigger and the other smaller?
Answer:
The size of the sheet is decided by measuring its area.

Question 9.
How can we decide the correct method of measurement?
Answer:
If we use conventional methods to measure a ‘certain length’, we get different values, when different persons measure. So the method is not correct. But if we use a metre scale to measure that length, we get the same value, even when different persons measure. So this method is correct. It means, we have to use a ‘standard length’ to make measurements of lengths. So this is the correct method of measurement.

Question 10.
What precautions should we take, while using a metre scale for measuring length?
Answer:
Precautions:

• The scale should be placed exactly along the length to be measured.
• Zero point on the scale should coincide with the starting point of the length to be measured.
• Our eye must be vertically above the point of coincidence of scale where the measurement is to be taken.
• The ends of the scale should be perfect. They should not be worn out.
• The length of the object should be measured at least more than twice. The average of these readings give the correct length of the object.

Question 11.
What is a measuring cylinder? Mention some of its uses.
Answer:

• A measuring cylinder is made of glass or plastic.
• It is cylindrical in shape.
• Graduations are marked on it from bottom to top.
• Measuring cylinders with different capacities,10 ml, 50 ml, etc. are available.

Uses:

• It can be used to measure the volumes of liquids such as kerosene, milk, oils, water etc.
• We can also measure the volumes of solids. Ex : Sand, clay, Kalakanda etc.

Question 12.
Why is a metre scale used to measure the length of the cloth?
Answer:

• Metre scale is a scale of fixed length. So it is used as a standard unit for measuring.
• A cubit or a hand span is not a standard length. Because this length varies from person to person. So these conventional units can’t be used to measure lengths, accurately.

Question 13.
What happens if each country has its own scale?
Answer:
If each country has its own scale which differs from others, it leads to a lot of problems in trade and commerce between the countries. This may lead to quarrels breaking out among the countries.

Question 14.
Read the following information and prepare any two questions.
Finally in France, it was decided that a certain length of rod made of a special material (Platinum-Iridium) would be called a metre. The metre was divided into 100 equal parts and these parts were called centimetre. Each centimeter was further divided into ten equal parts called millimetre. Now we are using this as a standard measurement for length throughout the world. This original scale is (preserved in a museum in France.
Answer:

• What are the units used for measuring length?
• What is the fundamental unit of length?
• How can we use scale for measuring the things?
• When do we use units like centimetres, metres etc.?

Question 15.
What questions you would ask your teacher to clarify your doubts on standard measures of units and conventional measurements (cubit, etc.)
Answer:

• What is the importance of knowing the difference between standard units and conventional methods?
• What would happen if we use of foot and palm to measure the areas.
• What are the uses of knowing standard units of measurement?
• Do all the people use only standard units?

Question 16.
Write some examples where we use instruments to measure the lengths and some examples where we do not use any instruments, but use foot, hand-span, palms etc. to measure the length.
Answer:
Cases where we use instruments : Stitching of clothes, door curtains, land measurements, house measurements, carpentry, road measurements, plumbing, masonry etc.

Question 17.
How do you measure the height of your classmate using a meter scale?
Answer:
Method:

• He is asked to stand with his back against a wall.
• A mark is made on the wall exactly on his head.
• Now, the distance is measured from the floor to this mark on the wall, with a scale. It gives the height of that boy.

Question 18.
How can you measure the thickness of a coin?
Answer:
Method:

• Take about 10 one rupee coins of same size.
• Place them exactly one upon the other.
• The total thickness is measured with a scale.
• This total thickness is divided by the number of coins, 10.
• Then we get the thickness of a single coin.

Question 19.
How do you measure the length of a curved path?
Answer:
The length of a curved line cannot be directly measured with a metal scale. A thread is used to measure its length.

Method:

• Alpins are fixed at the ends of the curved line to be measured.
• A long thick piece of cotton thread is taken.
• A knot is tied with the thread at the first point A of the alpin A.
• The cotton thread is moved along points B, C, D and E.
• Care is taken to see that the thread coincides with the curve at each point. while moving along the line.
• When the thread reached the extreme end of the curved path, it is cut at that point.
• Now the thread is stretched along a metre scale. The length of the thread gives the length of the curved line.

Question 20.
How can you measure the area of a regular surface, using a graph paper?
Answer:
Method:

• Take a card board. Cut from it, a small rectangle of length 3 cm and breadth 2 cm.
• Place the cardboard on a centimeter graph paper.
• Draw its outline with the help of a sharp pencil.
• Remove the cardboard and mark the shape as ABCD
• Count the number of squares inside the outline. The no. of small squares is 6.
• The area of each small square = 1 cm². So the area of the rectangular card board = 6 cm²

Question 21.
How can you measure the area of a leaf surface?
Answer:

The leaf is placed on a graph paper as shown in the figure. The boundary of the leaf is marked on the graph paper with a pencil. Later the leaf is removed to find the outline or boundary of the leaf on graph paper. The number of complete squares are counted (each of 1 cm² area) inside the boundary.

The squares inside the boundary, which are half or greater than half are also counted. They are added to the number of complete squares. The total number of squares inside the boundary gives the area of the leaf. If there are n’ squares inside the boundary the area of the leaf becomes n cm².

Question 22.
Measure the length of one side of a table using your hand-span. Ask your classmates to do the same. Record the length of the table in terms of number of hand-spans in table.

Write the results you got while measuring the length of a table in your classroom. Answer the following questions.
(i) Who got more number of hand-spans?
(ii) Why is there a difference in number of hand-spans though you measured the same table?
Answer:

• Ramu and Latha got more number of hand spans.
• The length of fingers are short in Ramu and Latha.

Question 23.
Answer the following:

(i) How do you select a suitable instrument to measure length ?
(ii) If you want to measure the thickness of an eraser, which of the instruments shown in figure is more suitable and why?
(iii) Can we measure these longer distances (such as length between your house and school, between two villages or countries or cities or towns)?
(iv) If not, how are these distances measured ?
(v) What instruments are used ?
(vi) Is there any other way to measure very large distances?

Answer:
(i) The measuring instrument depends on device or material.
(ii) Scale is used to measure the length and width of the eraser.
(iii) We can not measure longer distances by using the instruments shown in the figure.
(iv) Longer distances are measured in kilometers.
(v) Longer distances are measured by distance meters or survey chains.
(vi) Technology is highly developed. Now-a-days scientists, Engineers and surveyers take the help of satellites with the help of GPS (Global positioning system) to measure the longer distances.

Question 24.
Write the information you collected about foot-span measurement.
Answer the following:
(i) Is the number of foot- spans same when different students measure the length of class room?
(ii) Who got more number of foot – spans?
(iii) Who got least number of foot – spans ? Why?
Answer:

(i) No. The number of foot – spans are not same.
(ii) Ramu and Latha got more number of foot – spans.
(iii) Karthik got least number of foot spans. Because the length of the foot-span is larger than other students.

Question 25.
Mrs. John is constructing a house. She needs sand and enquired about prices. The supplier informed her that two tractor loads of sand costs ₹ 4000/- and one lorry load of sand costs about ₹ 4000/-.
Read the passage and answer the questions.
(i) Which deal is cheaper for Mrs. John ? A lorry load or two tractor loads of sand?
(ii) How can you decide which load has more quantity of sand?
Answer:
(i) A lorry load is cheaper.
(ii) The volume of lorry is more than the volume of tractor.

Question 26.
Draw the diagram of “measuring cylinder”. Which is used in the measuring of volume of irregular solids (bodies)?
Answer:

Question 27.
Observe the drawing chart figures given below.
Can you decide which is the bigger and which is the smaller sheet by observing them? If not what method do you adopt to decide the bigger one or smaller one?
Answer:
We cannot decide which one is bigger and which one is smaller by observing them. We will use graph to measure their area. By using graph we will decide the bigger one and smaller one of them.

Question 28.
Observe the given pictures (a) and (b) Answer the following:

(i) Which figure has more area and why?
Answer:
Both are same. Because the area of both the figures are same.

(ii) Are all the parts in both figures equal?
Answer:
Yes.

(iii) What is the shape of the smaller part in each diagram?
Answer:
Square shape.

(iv) Is the length and breadth of each
Answer:
smaller part equal?

Question 29.

1. What do you measure in this experiment?
Answer:
To know the volume of irregular bodies.

2. What are the apparatus required to conduct this experiment?
Answer:
Measuring jar, thread, stone, water

3. What is the relation between the volume of stone and increase in water level?
Answer:
As the stone is immersed water level rises in the jar.

4. What precautions do you take while conducting this experiment?
Answer:
Stone should not touch the bottom and edge of the jar.

Question 30.
How do we get benefitted by using standard units in our daily life?
Answer:
Using standard units of measurements has many advantages.

• We can get accurate lengths of items such as clothes, ropes, sheet from ships. This will satisfy everyone equally.
• Using same measurements throughout the world brings standardisation of length in every sector.
• Standard units erase confusion over measuring lengths anywhere else in the world.

These TS 6th Class Science Important Questions 12th Lesson Simple Electric Circuits are crafted to align with the curriculum, ensuring students are well-prepared for assessments.

TS 6th Class Science Important Questions 12th Lesson Simple Electric Circuits

Question 1.
Why the position of cells affects the working of a torch-light?
Answer:
If the cells are wrongly placed in their positions, the circuit does not complete. Electricit does not flow in the circuit. Then the torch light did not work.

Question 2.
Can you describe a torch cell?
Answer:

• The cell consists of a cylindrical metal can. It is heavy in C weight because it is filled with some chemicals.
  
• There is a carbon rod in its centre. This carbon rod protrudes on one end of the can.
• It is covered with a small metal cap. This is the positive terminal of the other side.
• This metal disc is the negative terminal of the cell. The entire can is sealed.

Question 3.
What does a torch light bulb contain? How does it differ from an electric bulb?
Answer:
Torch bulb : A torch bulb consists of a glass chamber fixed on a metal hase.
Two metal wires are firmly fixed. One wire is attached to the metal cap. The other wire is attached base at the centre of the metal cap. These wires act as two terminals. These two terminals do not touch each other.

Electric bulb : The arrangement in an electric bulb is different. In this bulb,the two metal wires are attached to the two teminals at the bottom of the metal cap. The bulb contains a filament made of tungsten metal. It is a thin spring-like wire. It is attached to the two metal wires inside the glass chamber.

Question 4.
Why do bulbs have two terminals?
Answer:

• In an electric bulb, there are two metal wires.
• One end of each wire, forms a terminal. Thus, there will be two terminals.
• Current enters or leaves the wires in the bulb through these terminals.
• Current enters the bulb through one of these terminals and leaves the bulb through the other terminal so there are two terminals in a bulb.

Question 5.
How does a bulb glow with the help of a cell?
Answer:

• Both the electric cell and the bulb have two terminals each.
• One terminal of the cell is connected to a terminal of the bulb by a conducting wire.
• The other terminal of the cells is connected to the other terminal of the bulb by mother conducting wire. Then the bulb glows.

Question 6.
Name the different parts of a torch-light.
Answer:
The parts of a torch-light are: A hollow cylindrical barrel, cells, bulb, reflector, glass cover, switch and a metal spring.

Question 7.
What does a torch consist ?
Answer:
Torch consists a hollow cylindrical barrel. Cells are fitted in it. At one end of it there is a lid with screw. The lid can be unscrewed and removed, if required.

Question 8.
What makes the torch bulb to glow?
Answer:

• The open-end of the barrel is closed with the lid and the switch is put ON.
• Circuit completes and current flows in the circuit.
• Then the bulb glows.

Question 9.
What is the material of the filament in a ‘filament bulb’?
Answer:
Tungsten

Question 10.
What material do you find in electric wires?
Answer:
Metal (usually copper)

Question 11.
Can electric current pass through a sheet of thermocole?
Answer:
No.

Question 12.
Can we use jute string in place of metal wire, to make a circuit?
Answer:
No.

Question 13.
What are the materials required for producing electric circuits to make the bulb glow ?
Answer:
A bulb, a wire, power (cell or electricity) switch, drawing pins, etc are required for producing electric circuits to make the bulb glow.

Question 14.
What are conductors and insulators? Give two examples. (or)
What are conductors and insulators? Separate the following substances as conductors and insulators.
[Iron nail, piece of paper, piece of metal, bangle, hairpin, eraser]
Answer:
Conductors : Substances which allow electric current to flow through them are called conductors.
Insulators : Substances which do not allow electric current to flow through them are called insulators.

Question 15.
How are the bulbs in our houses connected?
Answer:
The electric supply vires in our house are called live and neutral. They are connected to the two terminals of the bulb through a switch. The switch is used to close or open the electric circuit.

Question 16.
What is the use of a torch-light?
Answer:
Torch-light is used as a source of light.

Question 17.
Why don’t we use electric wires without removing the plastic covering?
Answer:
Plastic is a non-conductor of electricity. So it should be removed and then the metal wire connected.

Question 18.
Why are we advised to wear rubber chappals while working with electricity?
Answer:
Rubber works as a non-conductor of electricity. So we are advised to wear rubber chappals while working with electricity.

Question 19.
What happens if the two terminals of a cell are connected with a single wire?
Answer:
The cell gets discharged soon. Thus electrical energy gets wasted.

Question 20.
Can you find why the bulb glows only when cells are placed in particular position?
Answer:
Yes. For the electricity to pass, opposite ends of the two cells should be in direct contact with each other. Then only the circuit completes.

Question 21.
Write the material required, procedure and observations to prepare a simple electric circuit.
Answer:
Aim : To prepare an electric circuit with available material.
Required material : Insulated wires, battery or cell, bulb, switch (drawing pins) wooden plank or thermacol sheet etc.
Procedure:

• Three pieces of plastic covered vires are taken.
• At least two centimeters of plastic covering is removed at both ends of the wire pieces.
• Now one end of two tips are attached to a bulb and other end is attached to a cell and a switch.
• Switch is prepared with the safety pin at A and B on wooden plank.
• The third vire piece is attached between the cell and switch point B.
• It should be seen that the safety pin is attached at point B.
• It should he done in such a way that one end of the pin is in contact with B and the other end is left free.
• Now both ends A and B are connected with safety pin.

Observation : When safety pin is connected between A and B the switch is ON. Then the bulb glows.
When safety pin is disconnected from A the switch is OFF. Then the bulb stops glowing.

Question 22.
The wires are connected in different forms as shown in figures A, B, C, D, E and F. In each case, record whether the bulb glows or not. Give reason.
Answer:
figures

Question 23.
An open circuit is given. Different objects are given. Insert the objects one by one in the gap between the open terminals A and B. With each insertion, check whether the bulb glows or not. Record your observations in the table provided.
Answer:

Question 24.
Draw a sketch of torch-light.
Answer:

Question 25.
Arrange the two cells in a torch in as many ways as you can. In which cases does the bulb glow and in which cases it doesn’t?
Answer:
The two cells in a torch can be arranged in the following four ways.

Bulb glows in cases : A and D.
Bulb does not glow in cases: B and C.

Question 26.
List out the daily activities in which we use electricity. Give two suggestions to save electricity.
Answer:
The daily activities in which we use electricity.

• Getting air through fans and ACs.
• Storing the food material through refrigerators.
• Getting water from wells through motar pump sets.
• Using electricity for travelling and transportation through vehicles, electric trains etc.
• Grinding the food material with the help of mixers and grinders.
• Ironing the shirts.

Suggestions to save electricity:

• Switch off the fan and lights whenever you leave the home.
• Check up the water taps and keep them in good condition to avoid wastage of water. So that the electricity used for water supply will he saved.
• Everyone should see that keeping electrical circuits such as switches, plugs, bulbs etc., in good condition.
• It is very good to use LED bulbs instead of using tungsten filament candle bulbs and tube lights.

Question 27.
(a) Make an Electric Circuit with the following picture.

Answer:

(b) When did the bulb not glow in the circuit?
Answer:
When the circuit broke, the bulb did not glow.

The multiple-choice format of TS 6th Class Science Bits with Answers 11th Lesson Water in Our Life allows students to practice decision-making and selecting the most appropriate answer.

TS 6th Class Science Bits 11th Lesson Water in Our Life

Question 1.
A unit for measuring volumes of liquids
A) gallon
B) litre
C) cusecs
D) all
Answer:
D) all

Question 2.
Water level in the reservoirs is measured in ………………….
A) miles
B) feet
C) centimetres
D) milli metres
Answer:
B) feet

Question 3.
Water released from dams and projects during floods is measured in
A) cusec
B) litres
C) gallons
D) A and C
Answer:
A) cusecs

Question 4.
Liquids are measured in ……………..
A) centimetres
B) milli metres
C) gallons
D) metres
Answer:
C) gallons

Question 5.
Long periods of less rainfall causes
A) floods
B) droughts
C) cyclones
D) mansoons
Answer:
B) droughts

Question 6.
One of the following is not a reason for scarcity of water
A) deforestation
B) lack of rains
C) drying of water bodies
D) heavy floods
Answer:
D) heavy floods

Question 7.
Excessive rainfall in an area leads to
A) drought
B) floods
C) migration
D) none
Answer:
B) floods

Question 8.
Factors responsible for floods are
A) Intensity and duration of rainfall
B) Soil condition
C) Presence of plants or trees on the ground
D) All of them
Answer:
D) All of them

Question 9.
Find the mis-matched pair
1. Water in reservoir is measured in – feet
2. Water released from dams – liters
3. Liquids are measured in – liters or milliliters
A) 1
B) Both 1 & 2
C) 2
D) 3
Answer:
C) 2

Question 10.
Read the following.
1. Sea water is readily available for drinking
2. River water should be purified before drinking
3. Water in ponds and puddles is usually fresh water
Find the correct sentences from above
A) 1 & 2
B) 2 & 3
C) 1
D) 1 & 3
Answer:
B) 2 & 3

Question 11.
One of the following is not a fresh water body?
1. Puddle
2. Pond
3. River
4. Ocean
A) 4
B) 3
C) 1
D) 2
Answer:
A) 4

Question 12.
The consequences of drought
1. Very difficult to get food and fodder
2. Drinking water is sufficient
3. People travel long distances for water
4. Soil becomes wet and fertile
A) 1 & 2 are correct
B) 2 & 4 are correct
C) 1 & 3 are correct
D) 3 & 4 are correct
Answer:
C) 1 & 3 are correct

Question 13.
Area of the earth’s surface covered by water.
A) 34
B) 23
C) 14
D) 13
Answer:
A) 34

Question 14.
The percentage of water by weight in the human body is…………
A) 50%
B) 60%
C) 70%
D) 80%
Answer:
C) 70%

Question 15.
Fruit that contains large amount of water.
A) Mango
B) Apple
C) Watermelon
D) Guava
Answer:
C) Watermelon

Question 16.
Of the water available on the earth, the percentage of fresh water ……………
A) 1%
B) 2%
C) 3%
D) 4%
Answer:
A) 1%

Question 17.
The taste of sea water is ……
A) sweet
B) salty
C) sour
D) bitter
Answer:
B) salty

Question 18.
Why don’t we drink sea water?
A) because of sweet taste
B) because of salinity
C) because of sour taste
D) sea water with more minerals
Answer:
B) because of salinity

Question 19.
If several borewells are dug and underground water is tapped constantly what will happen to the source of ground water?
A) depletion of ground water occurs
B) depletion of rain
C) sudden decrease in water level of rivers
D) sudden increase in underground waters
Answer:
A) depletion of ground water occurs

Question 20.
Why are people ready to pay money for water along with other commodities?
A) Water is available in excessive amounts.
B) Water scarcity occurs
C) Water bodies became dry
D) Water bodies became contaminated
Answer:
D) Water bodies became contaminated

Question 21.
Water level in well increases during rainy season. Why?
A) due to direct rainfall into the well
B) over flow of river water to wells
C) rise of ground water revel leads to rise in water level of wells
D) A or B options
Answer:
C) rise of ground water revel leads to rise in water level of wells

Question 22.
What will happen if the source of ground water is tapped constantly?
A) Ground water level decreases
B) Ground water level increases
C) More rainfall occurs
D) Earth will be free of pollution
Answer:
A) Ground water level decreases

Question 23.
What happens if there is less rainfall or too much rainfall?
A) Water bodies are filled with rain water
B) Scarcity of food and drinking water problem will arise
C) All the crops are grown easily
D) Water will be useful for several years
Answer:
B) Scarcity of food and drinking water problem will arise

Question 24.
i) Water level in the water bodies depends on rainfall.
ii) Water level in the water bodies go up in summer.
A) Both the sentences are true
B) Both the sentences are false
C) Sentence – (i) is false, sentence – (ii) is true
D) Sentence – (i) is true, sentence – (ii) is false
Answer:
D) Sentence – (i) is true, sentence – (ii) is false

Question 25.
i) Sea water is salty and is not fit for drinking.
ii) Water used by us in our daily life is not salty.
A) Both sentences are false
B) Both sentences are true
C) Sentence – (i) is true, sentence – (ii) is false
D) Sentence – (i) is false, sentence – (ii) is true
Answer:
B) Both sentences are true

Question 26.
What have you done to measure the amount of water wasted by you?
A) Measured the time the tap was left open
B) A bucket was kept under the tap while using water
C) Measured the water used and wasted by other students
D) All the above
Answer:
D) All the above

Question 27.
The sequence of steps properly involved in observing the quantity of water mentioned on the label?
i) Water bottles are collected
ii) Labels are observed
iii) Observing their quantity
A) i, ii, iii
B) iii, ii, i
C) ii, iii, i
D) i, iii, ii
Answer:
A) i, ii, iii

Question 28.
What activities are considered to measure the amount of water used by us daily?
1. Drinking
2. Toilets
3. Bathing
4. Washing
The related activities for measuring?
A) 1,2,3
B) 2,3,4
C) 1,2,3,4
D) 2&3
Answer:
C) 1,2,3,4

Question 29.
Tapping of ground water by………………. is a tough job.
A) digging pit
B) digging well or borewell
C) fish tank
D) reservoir
Answer:
B) digging well or borewell

Question 30.
Rainfall is less and farmers are largely dependent on irrigation using to raise crops.
A) underground water
B) river water
C) salty water
D) lake water
Answer:
A) underground water

Question 31.
You found that paid water is purchased in shops through
A) Packets
B) Disposable bottles
C) Cans
D) All the above
Answer:
D) All the above

Read the given lines.
Sea water is salty but water used by us for our daily purposes is not salty. Water in ponds, pudd’es, rivers is fresh water.

Question 32.
Which water is not useful for drinking?
A) sea water
B) ocean water
C) well water from saline sou
D) all the above
Answer:
D) all the above

Read the given lines
Water level in the water sources depends on rainfall. Water levels in wells go up in the rainy season and go down in the summer season. :

Question 33.
Generally the water level in water sources depends upon
A) Rainfall during rainy season
B) Rainfall during winter season
C) Rainfall during summer season
D) Rainfall during dry condition
Answer:
A) Rainfall during rainy season

Question 34.
What are the places in which water is widely used other than our domestic purposes?
A) Vehicle washing shed
B) Industries
C) Houses
D) A & B
Answer:
D) A & B

Question 35.
These districts are treated as drought prone areas
A) Anantapur
B) Prakasham
C) A and B
D) Vest Godavari
Answer:
C) A and B

Question 36.
The place is determined as drought hit area by no rain fall for a period of
A) 1 to 2 years
B) 2 or 3 years
C) 4 to 5 ears
D) 6 months to 1 year
Answer:
C) 4 to 5 ears

Question 37.
Read the passage and answer the question.
During droughts it is very difficult to get food and fodder. Drinking water is scarce. What will people do in drought hit areas? ( )
A) People migrate longer distances for work
B) People stay back to get water
C) Nothing will happen to people in drought hit areas
D) People pray to god to get rains
Answer:
A) People migrate longer distances for work

Question 38.

What is the method to be implemented in the place of ‘?‘ empty box?
A) cleaning
B) aeration
C) sublimation
D) distillation
Answer:
B) aeration

Question 39.
The above picture tells us

A) floods
B) walk in sea
C) tap water burst
D) water in the summer
Answer:
B) walk in sea

Question 40.
Everyone should have the aim for conserving this resource for future generations .
A) water
B) plastic
C) synthetic material
D) polymers
Answer:
A) water

Question 41.
These are the suitable slogans for conserving water resources …..
1. Save water for future
2. Use water unnecessarily as much as possible
3. Every drop of water counts – let us save
4. Let us save water – save our lives
Suitable slogans are
A) 1,2 & 3
B) 2,3 & 4
C) 1,3 & 4
D) 1,2 & 4
Answer:
C) 1,3 & 4

The multiple-choice format of TS 6th Class Science Bits with Answers 9st Lesson Plants: Parts and Functions allows students to practice decision-making and selecting the most appropriate answer.

TS 6th Class Science Bits 9th Lesson Plants: Parts and Functions

Question 1.
The main root part of the plant
A) Tap root
B) Fibrous root
C) Ciliated root
D) Fat root system
Answer:
A) Tap root

Question 2.
The roots present in grass
A) Tap root
B) Fibrous roots
C) Fat root system
D) Trunk root
Answer:
B) Fibrous roots

Question 3.
Roots which store food
A) storage roots
B) tuberous roots
C) hard roots
D) soft roots
Answer:
B) tuberous roots

Question 4.
One plant doesn’t possess tap root system
A) Neem
B) Rice plant
C) Guava
D) Mango
Answer:
B) Rice plant

Question 5.
This helps in anchoring the plant body to the soil
A) root
B) stem
C) branch
D) twig
Answer:
A) root

Question 6.
The number of root systems
A) 2
B) 1
C) 4
D) 3
Answer:
A) 2

Question 7.
The minerals present in the soil are absorbed by
A) Stem
B) Leaf
C) Root
D) Fruit
Answer:
C) Root

Question 8.
In some plants, food is stored in roots. These roots are called …………
A) Tap roots
B) Tuberous roots
C) Fibrous roots
D) None
Answer:
B) Tuberous roots

Question 9.
Example for Tuberous root
A) Carrot
B) Raddish
C) Beetroot
D) All
Answer:
D) All

Question 10.
The stalk like structure of leaf :
A) vein
B) midrib
C) palm
D) petiole
Answer:
D) petiole

Question 11.
…… acts as a skeleton of the leaf and gives it a shape and support
A) Petiole
B) Stalk
C) Venation
D) Midrib
Answer:
C) Venation

Question 12.
The flat portion of the leaf
A) Petiole
B) Edge
C) Midrib
D) Lamina
Answer:
D) Lamina

Question 13.
Which part connects leaf lamina with stem?
A) Petiole
B) Midrib
C) Vein
D) Edge
Answer:
B) Midrib

Question 14.
The long vein present in the middle of the leaf is
A) Midrib
B) Lamina
C) Vein
D) Petiole
Answer:
A) Midrib

Question 15.
Leaf prepares food by the process of
A) Digestion
B) Photosynthesis
C) Respiration
D) Excretion
Answer:
B) Photosynthesis

Question 16.
Reticulate venation is present in the plants having the following root system.
A) Tap Root system
B) Fibrous Root system
C) System of Rootlets
D) Adventitious root system
Answer:
A) Tap Root system

Question 17.
Carrot, sweet potato are good examples of ………….
A) leaves
B) storage stem
C) tuberous roots
D) All
Answer:
C) tuberous roots

Question 18.
One of the following parts is not an aerial part of the plant.
A) Leaves
B) Flower
C) Tuberous stem
D) Branch
Answer:
C) Tuberous stem

Question 19.
In a plant leaves and flowers grow from the
A) branch
B) stem
C) roots
D) apex
Answer:
B) stem

Question 20.
Branches are absent in this plant
A) Sugarcane
B) Tulasi
C) Hibiscus
D) Rose
Answer:
A) Sugarcane

Question 21.
We will see a on the stem of potato.
A) root
B) blade
C) patch
D) scar
Answer:
D) scar

Question 22.
These attract insects for pollination
A) flowers
B) fruits
C) seeds
D) leaves
Answer:
A) flowers

Question 23.
Potato is a modified.
A) root
B) leaf
C) stem
D) seed
Answer:
C) stem

Question 24.
One of the following is not a modified stem
A) Garlic
B) Carrot
C) Ginger
D) Potato
Answer:
B) Carrot

Question 25.
Colourful structures of the flower
A) Sepals
B) Pollens
C) Buds
D) Petals
Answer:
D) Petals

Question 26.
Example for parallel leaf venation having plant is
A) Mango
B) Neem
C) Jowar
D) Hibiscus
Answer:
C) Jowar

Question 27.
Banana oil is made from …………….
A) Bananas
B) Banyan tree
C) Petroleum
D) Banana plant
Answer:
C) Petroleum

Question 28.
Find the mis-matched pair …………….
(i) Grass – parallel venation
(ii) Mango – parallel venation
(iii) Sugarcane – parallel venation
(iv) Neem – reticulate venation
A) i
B) ii
C) iii
D) iv
Answer:
B) ii

Question 29.
Match the following.

A) 1 – a, 2 – b, 3 – c
B) 1 – b, 2 – c, 3 – a
C) 1 – b, 2 – a, 3 – c
D) 1 – c, 2 – a, 3 – b
Answer:
D) 1 – c, 2 – a, 3 – b

Question 30.
Find the odd one out regarding types of plants and their nature ( )

Answer:

Question 31.
Find the modified stems among the following

Answer:
C) i, iii, iv, v, vi

Question 32.
a) Stomata are bean shaped structures
b) They help in exchanging of food. Which is correct?
A) Both a & b are correct
B) a is correct h is wrong
C) Both a & b are wrong
D) a is wrong h is correct
Answer:
B) a is correct h is wrong

Question 33.
a) The arrangement of veins in the lamina is called venation
b) Venation acts like a skeleton of leaf.
A) Both a & b are wrong
B) a is wrong b is correct
C) a is correct b is wrong
D) Both a & b are correct
Answer:
D) Both a & b are correct

Question 34.
Scaly leaves are not present in
A) Grass
B) Mango
C) Paddy
D) A or C
Answer:
B) Mango

Question 35.
1) Water is released from plant in the form of vapours.
2) Excess water is released from the plant through the stomata.
3) Transpiration helps in removal of excess water from plants.
A) all sentences are correct
B) sentence I is correct
C) 2 & 3 are correct
D) All are wrong
Answer:
A) all sentences are correct

Question 36.
If leaves are absent in the mango tree,
A) the plant won’t prepare water
B) the plant will die
C) photosynthesis decreases
D) respiration increases
Answer:
B) the plant will die

Question 37.
Why do leaves have stomata?
A) To receive carbondioxide
B) To release oxygen
C) To prepare food
D) All the above
Answer:
D) All the above

Question 38.
………. carries the water absorbed by the roots to different parts of the plant
A) root
B) leaf
C) branch
D) stem
Answer:
D) stem

Question 39.
If transpiration is not done in the plants
A) the plants do not prepare food properly
B) the plants cannot maintain water percentage
C) water imbalance occurs in the plant
D) all the above
Answer:
D) all the above

Question 40.
The incorrect function of the leaf among the following statements.
A) Preparation of starch by photosynthesis
B) Exchange of gases through stomata
C) Elimination of water vapour through transpiration
D) Restrict water transportation
Answer:
D) Restrict water transportation

Question 41.
What would happen if stomata are absent in leaves?
A) Transpiration does not occur
B) No gas exchange occurs
C) Water transportation does not occur
D) All of the above
Answer:
D) All of the above

Question 42.
Leaf : Photosynthesis : Root ………..
A) Food preparation
B) Water preparation
C) Taking water and minerals
D) Food releasing
Answer:
C) Taking water and minerals

Question 43.
Pistils have three parts. They are
A) stigma, ovule, style
B) ovary, seed, petal:
C) petiole, stigma, style
D) stigma, style, ovary
Answer:
D) stigma, style, ovary

Question 44.
Why don’t all the plants have the same kind of leaves?
A) Based on the place and conditions the leaves are modified
B) Based on the stem they grow roots
C) Roots develop leaves
D) Stem produces leaves
Answer:
A) Based on the place and conditions the leaves are modified

Question 45.
Choose the correct answer
A) All roots are similar in paddy
B) Potato is a stern tuber
C) Grass has reticulate venation
D) Tamarind has fibrous root system
Answer:
A) All roots are similar in paddy

Question 46.
If you don’t know the name of a collected plant what would you do?
A) We will ask our teacher
B) We will ask the gardener
C) We will ask the farmer
D) Above all
Answer:
D) Above all

Question 47.
What is the nature of the root system that you observed in Tridax plant.
A) Tap root system – main root with lateral roots
B) Fibrous root system – main root with lateral roots
C) Tap root system — Root hairs
D) Lateral root system with tap roots
Answer:
A) Tap root system – main root with lateral roots

Question 48.
What is the purpose of adding ink in the tumbler?

A) In order to observe minerals and food that is absorbed by plant
B) In order to observe water and minerals absorbed by roots of plant
C) In order to cut the stem of a plant
D) In order to cut the leaves of a plant
Answer:
B) In order to observe water and minerals absorbed by roots of plant

Question 49.
What aspects are considered in observing the similarities among leaves of different plants? ( )
1. Leaf base, Petiole, Lamina
2. Leaf shape, Leaf edge
3. Leaf life, Place of leaf on stem
A) 1 and 3
B) 1 and 2
C) 2 and 3
D) 1,2 and 3
Answer:
B) 1 and 2

Question 50.
If you want to observe types of venation in leaves what leaves are to be collected?
A) Mango and Grass
B) Grass and Paddy
C) Grass and Hvdrilla
D) Mango and Guava
Answer:
A) Mango and Grass

Question 51.
Write the steps involved in observing stomata in leaves
1. Fleshy leaf is taken
2. Put a drop of water on it
3. Peel the outer layer of the leaf
4. Observe it under microscope
5. Place it on a slide.
A) 1, 2, 3, 4, 5
B) 5, 4, 3, 2, 1
C) 4, 5, 2, 3,1
D) 1, 3, 2, 5, 4
Answer:
D) 1, 3, 2, 5, 4

Question 52.
Where do we see traditional cottage industry where pictures of various mythological figures are drawn with bright colours on dried leaves
A) Warangal
B) Mahaboob nagar
C) Khammam
D) None
Answer:
A) Warangal

Question 53.
Read the given lines.
Some plants store food in roots and stems. Some plants like radish, carrot,beetroot store food materials in their roots. What is the special feature in the plants like radish, carrot, beetroot etc?
A) Roots of these plants store water
B) Roots of these plants store food
C) Stem of these plants store food
D) Leaf of these plants store food
Answer:
B) Roots of these plants store food

Question 54.

Based on the information studied by you what type of venation is seen in the plant Sapota? ( )
A) Parallel venation
B) Parallel venation or Reticulate venation
C) Reticulate venation
D) Horizontal venation
Answer:
C) Reticulate venation

Question 55.
Read the table

What types of root system is seen in plants like grass or rice? ( )
A) Tap root system
B) Fibrous root system
C) Tap root it Fibrous root system
D) Upper tap root system
Answer:
B) Fibrous root system

Question 56.
Read the given lines.
There are variations in the size and shape of plants but generally all plants havel roots, stems and leaves.
What do plants generally have?
A) Roots
B) Fruits & buds
C) Leaves & stem
D) All the above
Answer:
D) All the above

Question 57.
Read the given lines.
The long vein present in the middle of the leaf lamina is called midrib. The branches arising from the midrib are called veins. Veins in the leaf are very helpful in ?
A) Giving shape and support
B) Supply material
C) A & B
D) Taking gases
Answer:
C) A & B

Question 58.
Venation of the leaf in the picture is?

A) Reticulate
B) Parallel
C) Circular
D) Linear
Answer:
A) Reticulate

Question 59.
Find the type of venation.

A) Reticulate venatiori
B) Parallel venation
C) Palmate venation
D) Pinnate venation
Answer:
B) Parallel venation

Question 60.
The following diagram represents

A) Osmosis
B) Photosynthesis
C) Transpiration
D) Respiration
Answer:
C) Transpiration

Question 61.
The given picture of root system is present in

A) Mango – Tap root system
B) Grass – Tap root system
C) Neem – Fibrous root system
D) Palm tree – Tap root system
Answer:
A) Mango – Tap root system

Question 62.
What is the use of given diagram present in plants?

A) it is a stomata – for exchanging gases
B) It is a root – for exchanging food
C) It is a stomata – for transpiration
D) It is a leaf – for photosynthesis
Answer:
D) It is a leaf – for photosynthesis

Question 63.
……. helps in exchange of gases in trees
A) Stem
B) Root
C) Stomata
D) Branch
Answer:
C) Stomata

Question 64.
We enjoy the beauty of nature through these components of plant?
A) Leaf
B) Flowers
C) Roots
D) Stem
Answer:
B) Flowers

Question 65.
How do plants help us?
A) By giving food and air
B) By giving air and water
C) By cleaning environment
D) A and C
Answer:
D) A and C

Question 66.
Find the correct sentence on plants and their role in the nature.
A) They give air to breathe
B) They make us to survive on the earth
C) Both
D) They confront our lives
Answer:
C) Both

Question 67.
Leaves expel excess water through the stomata. What do we call this process?
A) Condensation
B) Melting
C) Evaporation
D) Transpiration
Answer:
D) Transpiration

Question 68.
Which of the following plant preserves food in the stem?
A) Ginger
B) Carrot
C) Beetroot
D) Radish
Answer:
A) Ginger

Regular practice with TS 6th Class Science Bits with Answers 8th Lesson Fibre to Fabric improves students’ confidence and readiness for assessments and examinations.

TS 6th Class Science Bits 8th Lesson Fibre to Fabric

Question 1.
Separation of seeds from the cotton is called
A) Ginning
B) twisting
C) weaving
D) spinning
Answer:
A) Ginning

Question 2.
Golden fibre
A) Cotton yarn
B) Chemical yarn
C) Wool
D) Jute yarn
Answer:
D) Jute yarn

Question 3.
This is not a plant fibre
A) Nylon
B) Hemp
C) Flax
Answer:
A) Nylon

Question 4.
Synthetic fibre
A) Silk
B) Jute
C) Acrylic
D) Hemp
Answer:
C) Acrylic

Question 5.
Which of the following was used to spin yarn?
A) Charka
B) Takli
C) Gear
D) A & B
Answer:
D) A & B

Question 6.
Cotton is obtained from
A) flowers
B) fruits
C) leaves
D) stems
Answer:
B) fruits

Question 7.
Cotton plants are usually cultivated in
A) Red soil
B) Sand
C) Black soil
D) Hill areas
Answer:
C) Black soil

Question 8.
Ginning is the process associated with
A) Cotton
B) Jute
C) Mango
D) Coconut
Answer:
A) Cotton

Question 9.
The fruits of the cotton plant are called
A) cotton bolls
B) coconut bolls
C) stems
D) roots
Answer:
A) cotton bolls

Question 10.
Arranging of yarn horizontally and vertically to make fabric
A) weaving
B) spinning
C) retting
D) none
Answer:
A) weaving

Question 11.
Looms operated by the electrical motors
A) Electric loom
B) Power loom
C) Handloom
D) Charka
Answer:
B) Power loom

Question 12.
Examples of the products made from Jute
A) Tables, door curtains
B) Buckets, Pens
C) Chairs, CPUs
D) Gunny bags, floor mats, chappals
Answer:
D) Gunny bags, floor mats, chappals

Question 13.
Read the table and choose the correct options for blanks.

A) Towels
B) Sarees
C) Parachutes
D) A & B
Answer:
D) A & B

Question 14.

Find the mismatched one from the above table.
A) a
B) b
C) c
D) a & c
Answer:
A) a

Question 15.
Match the following:
1) Cotton ( ) a) Moths
2) Polyester ( ) b) Heavier fabrics
3) Silk ( ) c) Light fabrics
A) 1 – c, 2 – a, 3 – b
B) 1 – c, 2 – b, 3 – a
C) 1 – b 2 – a, 3 – c
D) 1 – b, 2 – c, 3 – a
Answer:
D) 1 – b, 2 – c, 3 – a

Question 16.
Read the following sentences that explains natural fibres.
i) Absorb more water
ii) Less time taken to dry
iii) Very smooth to touch
iv) Chemicals are used to make
A) All are true
B) Only (i) is true
C) Only (iii) & (iv) are true
D) Only (i) & (iv) are true
Answer:
B) Only (i) is true

Question 17.
The following one is not a natural fibre
A) Cotton
B) Silk
C) Terylene
D) Decron
Answer:
C) Terylene

Question 18.
Silk : insect : : Wool
A) sheep
B) plant
C) cotton
D) snake
Answer:
A) sheep

Question 19.
Why do we dye the yarns?
A) to get soft enough to make fabric
B) to get strong enough to make hag
C) to make weak and soft
D) to get strong enough to make fabric
Answer:
D) to get strong enough to make fabric

Question 20.
Jute fibre is derived from which part of the jute plant?
A) Leaves
B) Peel of the stem
C) Root
D) Seed
Answer:
B) Peel of the stem

Question 21.
Find the odd one out regarding types of fibres.
A) Cotton
B) Wool
C) Silk
D) Terylene
Answer:
D) Terylene

Question 22.
Read the sentences:
a) Fabrics are not only used for making clothes.
b) The material used for making school bags Is a kind of fabric
A) Both (a) and (b) are correct
B) (a) is correct (b) is wrong
C) (a) is wrong (b) is correct
D) Both (a) and (b) are wrong
Answer:
A) Both (a) and (b) are correct

Question 23.
Pick the correct question for clarifying doubt on woollen fabrics
A) How do we collect woollen from plants?
B) Which animals fibre is used as wool?
C) How silk worm gives woollen?
D) Is cotton gives perfect wool?
Answer:
B) Which animals fibre is used as wool?

Question 24.

If the fibre is less water absorbed, high in stretching and melts on burning. What is it ?
A) Natural fibre
B) Artificial fibre
C) Synthetic fibre
D) B & C
Answer:
D) B & C

Question 25.
If you want to see handloom industry where should you visit ?
A) Gadwal
B) Siricilla
C) Venkatagiri
D) All these places
Answer:
D) All these places

Question 26.
……….. is a type of rough cotton fabric used in book binding.
A) Coconut fibre
B) Jute
C) Calico
D) Date palm
Answer:
C) Calico

Question 27.
After washing, cotton clothes get
A) expanded
B) wrinkled
C) stretched
D) burnt
Answer:
B) wrinkled

Question 28.
Suppose a student burnt a cloth of silk what type of smell he might have observed ?
A) burning of feather
B) burning of skin
C) burning of leaves
D) burning of cloth
Answer:
A) burning of feather

Question 29.
Suppose you washed cotton shirt and polyester shirt. You kept them in the sun. Which one becomes dry earlier?
A) polyester
B) cotton
C) both A & B
D) they won’t dry
Answer:
A) polyester

Question 30.
The thread like structures you observed in the fabric
A) retting
B) clown
C) roughage
D) yarn
Answer:
D) yarn

Question 31.
If you touch these clothes you feel soft sense.
A) cotton
B) silk
C) wool
D) jute
Answer:
B) silk

Question 32.
Jute Is grown in soil.
A) clay
B) loam
C) loose
D) alluvial
Answer:
D) alluvial

Question 33.
In Andhra Pradesh cotton is widely grown in district.
A) Ananthapur
B) Prakasam
C) East Godavari
D) Srikakulam
Answer:
B) Prakasam

Question 34.
Paddy, chilli and other commercial crops are usually packed in bags.
A) polythene
B) synthetic
C) gunny
D) fibre
Answer:
C) gunny

Question 35.
Generally weaving of clothe is done on
A) cart
B) takli
C) looms
D) charka
Answer:
C) looms

Question 36.
What will you do before Inserting the thread into the needle?
A) Twist the end
B) Wet the end
C) A or B
D) Stretch the end of the thread
Answer:
C) A or B

Question 37.
When you touch silky clothes how do you feel?
A) Slippery
B) Shiny
C) Coarse to touch
D) A and B
Answer:
D) A and B

Question 38.
Find the correct order for making cotton yam.
A) Cotton boils → Remove seeds → Separate cotton
B) Remove seeds → Cotton boils → Separate cotton
C) Separate cotton → Remove seeds → Cotton boils
D) Cotton seeds → Cotton plants → Yarn
Answer:
A) Cotton boils → Remove seeds → Separate cotton

Question 39.
What did you observe while burning the polyester cloth?
A) Gives ash
B) Gives water
C) Gives pungent smell
D) Gives different colours
Answer:
C) Gives pungent smell

Question 40.
What did you observe while burning the silk and cotton fabric?
A) Gives ash
B) Gives colours
C) Release water
D) No change
Answer:
D) No change

Question 41.
The fibre used for making Khaddar
A) Woollen
B) Cotton
C) Silk
D) Nylon
Answer:
B) Cotton

Question 42.
What can we do to make the cotton yarn strong enough?
A) dryed and coated with oils
B) dryed and coated with chemicals
C) dryed and coated with water
D) soaked in the petrol

Answer:
B) dryed and coated with chemicals

Question 43.
An example for natural fibre of plant origin.
A) Cotton
B) Silk
C) Rayon
D) Nylon
Answer:
A) Cotton

Question 44.
Do you find any relation between smoothness and time to dry?
A) They are inversly related
B) As smoothness increases, time to dry increases
C) No relation
D) Sometimes increases, sometimes decreases
Answer:
A) They are inversly related

Question 45.
Which fabrics give ash when they are burn?
A) cotton
B) rayon
C) nylon
D) polyster
Answer:
A) cotton

Question 46.
Read the lines and answer the question given below.
There are thread like structures in the fabric. These threads are called yarn.

Q. Fabric is made up of ………….
A) Cloth
B) Yarn
C) Seed
D) Plant
Answer:
B) Yarn

Question 47.
When we burn fabric made up of artificial fibre it gives a pungent smell.
Q. The fibre gives pungent smell in burning.
A) Synthetic fibre
B) Natural fibre
C) Coarse fibre
D) Silk fibre
Answer:
A) Synthetic fibre

Question 48.
Read the table :

The fabric used in book binding
A) Coir
B) Cotton
C) Calico
D) Jute
Answer:
C) Calico

Question 49.
Why do our farmers dry the stems of Red Sorrel (Gongura)?
A) To collect wool
B) To collect jute
C) To collect cotton
D) To collect silk
Answer:
B) To collect jute

Question 50.
Why should we wear woollen clothes in winter?
A) To retain our body heat
B) To keep our body cool
C) To stop air from our body
D) B and C
Answer:
A) To retain our body heat

Question 51.
If we wear woollen clothes in summer season. What will happen?
A) Our body becomes cool
B) Our body becomes ice
C) Our body feels much suffocate
D) Cool air enters into our organs
Answer:
C) Our body feels much suffocate

Question 52.
Find the wrong sentence.
A) Hemp and flax are animal fibres
B) Jute is a plant fibre
C) Cotton is taken from plant
D) Silk is obtained from silk moth
Answer:
A) Hemp and flax are animal fibres

Question 53.
Some sentences about artificial fibres.
i) Smooth to touch
ii) Less time to dry
iii) Absorbs less water
iv) More stretching capacity
A) i, ii, iii only
B) ii, iii, iv
C) iii, iv
D) i, iv only
Answer:
A) i, ii, iii only

Question 54.

A) Colouring
B) Dying
C) Spinning
D) Ginning
Answer:
C) Spinning

Question 55.
Find the mismatched pair.
1) Nylon – Parachute ropes
2) Cotton – Towels
3) Wool – Summer clothes
A) 1
B) 2
C) 3
D) 1&3
Answer:
C) 3

Question 56.
Find the given diagram related to spinning of thread.

A) Takli
B) Charka
C) Ratnam
D) Dredging
Answer:
A) Takli

Question 57.
The given picture shows

A) net of ball making
B) metallic wire making
C) mat making
D) all the above
Answer:
C) mat making

Question 58.
Now a days weaving is done on
A) power looms
B) wooden loom
C) stick looms
D) charkha
Answer:
A) power looms

Question 59.
Jute is collected from
A) plants
B) animals
C) A & B
D) chemicals
Answer:
A) plants

Question 60.
What is the change that we see in wearing garments from ancient period to modern age?
1) Ancient people used to wear animal skin as clothes.
2) Clothes were also made from metal.
3) Ancient people started wearing fibres.
4) Different types of clothes were worn by ancient people.
A) 1 & 3 sentences correct
B) 1 & 2 sentences correct
C) 2 & 3 sentences correct
D) 1 & 4 sentences correct
Answer:
B) 1 & 2 sentences correct

Question 61.
In order to decrease child labour In textile and handloom industry one of these activities is helpful.
A) Voluntary organisations uy to eradicate it.
B) Government should take remedial measures.
C) Government should encourage child labour.
D) A and B sentences are reliable.
Answer:
D) A and B sentences are reliable.

Question 62.
Why people use cotton clothes in summer season?
1) to keep body cool.
2) To keep body warmth and humid
3) To absorb sweat.
4) To leave more sweat out.
5) To absorb more heat.
Correct sentences are
A) 1, 3 sentences
B) 1, 2 only
C) 2, 3 only
D) 1, 2, 4 only
Answer:
A) 1, 3 sentences

Question 63.
To protect our environment we should do one of the following.
A) Using cloth bags instead of polythene bags.
B) Using plastic bags instead of cloth bags.
C) Leaving garbage everywhere in the surroundings.
D) Using synthetic clothes widely.
Answer:
A) Using cloth bags instead of polythene bags.

Question 64.
What is the advantage of natural fibre compared to artificial fibres?
A) They easily decomposed in the soil.
B) They are environmentally and eco-friendly factors.
C) Both A & B sentences.
D) They are hard and durable.
Answer:
C) Both A & B sentences.

Regular practice with TS 6th Class Science Bits with Answers 7th Lesson Separation of Substances improves students’ confidence and readiness for assessments and examinations.

TS 6th Class Science Bits 7th Lesson Separation of Substances

Question 1.
The components of Indian Ink can be identified using this technique
A) Filtration
B) Chromatography
C) Evaporation
D) Decantation
Answer:
B) Chromatography

Question 2.
Which of the following is not dissolved in water?
A) Sugar
B) Cooking oil
C) Salt
D) Lemon Juice
Answer:
B) Cooking oil

Question 3.
Concrete is a ……………..
A) mixture
B) man-made substance
C) natural product
D) A and B
Answer:
D) A and B

Question 4.
When the sugar falls in the red gram in your house, you separate the sugar by following
A) with magnet
B) sieving
C) sublimation
D) chromatography
Answer:
B) sieving

Question 5.
Which method helps to separate the husk from grain?
A) Grain and husk are equal in weight
B) Winnowing method
C) The weight of husk is less than the grain
D) None of the above
Answer:
C) The weight of husk is less than the grain

Question 6.
The impurities and bran present in flour can be removed by
A) Filtration
B) Evaporation
C) Churning
D) Sieving
Answer:
D) Sieving

Question 7.
Muddy water is taken in a beaker and allowed to stand. Then the mud settles down. The phenomenon is called (or) Mud and sand are separated from water by using this method.
A) Decantation
B) Sedimentation
C) Evaporation
D) Winnowing
Answer:
B) Sedimentation

Question 8.
Sand and salt are separated from its mixture using the principle
A) decantation and then evaporation
B) evaporation and then decantation
C) evaporation and condensation
D) sieving and winnowing
Answer:
A) decantation and then evaporation

Question 9.
Sieving is used when components of mixture have
A) same particle size
B) different particle sizes
C) same or different particle sizes
D) none
Answer:
B) different particle sizes

Question 10.
Your mother adds the following ingredients for smell while cooking biryani
A) Dal-Chilli powder
B) Onions – Dal
C) Cloves – Cardamom
D) Salt-Chilli powder
Answer:
C) Cloves – Cardamom

Question 11.
If crystallization process is not done in the nature, we can’t obtain…
A) Sea water
B) Sugar from sugarcane
C) Salt from sea water
D) Urea from crop
Answer:
C) Salt from sea water

Question 12.
The method of ……….. is used in the process of preparing cheese (paneer) in our houses.
A) decantation
B) filtration
C) sublimation
D) crystallisation
Answer:
B) filtration

Question 13.
Salt is separated from salt water by
A) crystallisation
B) filtration
C) sedimentation
D) sieving
Answer:
A) crystallisation

Question 14.
The reverse process of ‘evaporation’ is
A) filtration
B) decantation
C) boiling
D) condensation
Answer:
D) condensation

Question 15.
When the heavier component of a mixture settles down after water is added to it is called ……….
A) Sublimation
B) Filteration
C) Sedimentation
D) Crystallisation
Answer:
C) Sedimentation

Question 16.
Impurities settle at the bottom when muddy water was kept over night in a bucket. The clear water was then poured off from the top. The
process of separation used in this example is called
A) Filteration
B) Decantation
C) Winnowing
D) Sublimation
Answer:
B) Decantation

Question 17.
Separation of colours from a mixture of colours is called …….
A) Sublimation
B) Chromatography
C) Decantation
D) Crystallization
Answer:
B) Chromatography

Question 18.
Chromatography: colour: sedimentation ………
A) sand and mud
B) husk and paddy
C) flour and sugar
D) sugar and salt
Answer:
A) sand and mud

Question 19.
Find out the odd one regarding separation of mixture
A) Sublimation
B) Rectification
C) Crystallization
D) Distillation
Answer:
B) Rectification

Question 20.
If oil is mixed with water, how can you separate it?
A) by sublimation
B) by decantation
C) by sedimentation
D) by filtration
Answer:
D) by filtration

Question 21.
The result of conducting Chromatography is ……….
A) All colours are mixed
B) Colours are separated
C) New colours are formed without separation
D) No change observed
Answer:
B) Colours are separated

Question 22.
The following method is used to separate colour from the mixture
A) Sedimentation
B) Filtration
C) Chromatography
D) Winnowing
Answer:
C) Chromatography

Question 23.
Mud is separated by this process
A) Sedimentation
B) Winnowing
C) Crystallisation
D) Distillation
Answer:
A) Sedimentation

Question 24.
Identify the correct sentence.
A) Colours are separated by chlorography
B) Colours are separated by chromatography
C) Colours are separated by achlorography
D) Colours are separated by chromography
Answer:
B) Colours are separated by chromatography

Question 25.
Match the following.
a) Hand picking ( ) i) Soil and water separation
b) Sedimentation ( ) ii) Husk from grain
c) Winnowing ( ) iii) Stones from rice
A) a-i, b-ii, c-iii
B) a-iii, b-ii, c-i
C) a-ii, b-iii, c-i
D) a-iii, b-i, c-ii
Answer:
B) Colours are separated by chromatography

Question 26.
Mixture of substances present in the coffee.
A) Coffee powder, water, sugar, milk
B) Salt, water, coffee powder
C) Salt, water, coffee powder
D) Salt, sugar water, coffee powder
Answer:
A) Coffee powder, water, sugar, milk

Question 27.
Match the following.
a) Crystallisation ( ) i) Prepare pure water
b) Distillation ( ) ii) Camphor vapourisation
c) Sublimation ( ) iii) Salt from water
A) a – i,b – ii,c – iii
B) a – iii,b – i,c – ii
C) a – ii,b – i,c – iii
D) a – i,b – iii,c – ii
Answer:
B) a – iii,b – i,c – ii

Question 28.
Read the following sentences. Find the correct sentences.
i) Chromatography is done with chalk piece
ii) Sublimation is the technique for salt and water
iii) We can separate stones and paddy from rice
iv) Winnowing helps us to separate husk from grain
A) i, ii, iii
B) i, iii, iv
C) i, iii only
D) ii, iii, iv
Answer:
B) i, iii, iv

Question 29.
Substances that are mixed in lemon water.
A) lemon juice
B) salt or sugar
C) water
D) all the above
Answer:
D) all the above

Question 30.
One of the following is not a man-made substance
A) laddu
B) animal body
C) jam
D) curd
Answer:
B) animal body

Question 31.
Find out the wrong statement.
A) Husk is separated from grain by winnowing
B) Flour is separated from red gram by crystallisation
C) Stones are separated from rice by hand picking
D) Salt is obtained by evaporation of sea water.
Answer:
B) Flour is separated from red gram by crystallisation

Question 32.
Identify the correct statement of the following.
I) Salt is separated from salt solution by crystallization.
Il) Sugar is separated from tea by filtration.
A) I, Il are correct
B) I, II are not correct
C) I is correct, is not correct
D) I is not correct,is correct
Answer:
C) I is correct, is not correct

Question 33.
The correct question to clarify doubt on distillation.
A) How can we use drinking water?
B) What material is used for chromatography to get distilled water?
C) How can we get distilled water?
D) A or B
Answer:
C) How can we get distilled water?

Question 34.
What will be the consequence if there is no crystallisatlon in the nature?
A) We can’t find the colours
B) We can’t get distilled water
C) We can’t separate pure rice
D) We can’t get salt from sea water
Answer:
D) We can’t get salt from sea water

Question 35.
Find the odd one out regarding mixtures of substances.
A) Coffee
B) Tea
C) Lemon Juice
D) Water
Answer:
D) Water

Question 36.
Read the given sentences.
Lakshmi says that sedimentation and decantation are used at home while cleaning
rice and pulses for cooking.
A) Sentence is wrong based on the process
B) Sentence is correct based on the process
C) Sentence is incomplete based on the method
D) Sentence gave wrong information
Answer:
A) Sentence is wrong based on the process

Question 37.
Read the given sentences.
a) Chromatography is used to separate the colours
b) Camphor is vapourised by sublimation
A) Both the sentences are wrong
B) (a) is correct (b) is wrong
C) (b) is correct (a) is correct
D) Both the sentences are correct
Answer:
D) Both the sentences are correct

Question 38.
Filter paper for mud water. Then what is for chromatography?
A) Chalk powder
B) Funnel
C) Chalk piece
D) Sieve plate
Answer:
C) Chalk piece

Question 39.
When a few plants are Infested …………… is an excellent method of controlling pests.
A) hand picking
B) crystallization
C) chromatography
D) sedimentation
Answer:
A) hand picking

Question 40.
How can you separate stones, the mixture combining pebbles and other organic matter?
A) distillation
B) crystallization
C) decantation
D) hand picking
Answer:
D) hand picking

Read the given paragraph and answer the question:
On a windy day, a farmer stands on a high platform and allows the mixture of grain and husk to drop slowly from the flat pan. The wind carries the husk forward and the grain fall vertically downward. A separate heap of grain is formed.

Question 41.
Which method of separation is explained in the given paragraph?
A) sieving
B) flat falling
C) winnowing
D) hand moving
Answer:
C) winnowing

Question 42.
A filter paper can be used to separate
A) salt from salt solution
B) seeds and solid particles of pulp in the vegetable juice
C) muddy particles from muddy water
D) decoction from boiled tea leaves.
Answer:
B) seeds and solid particles of pulp in the vegetable juice

Question 43.
The method commonly employed by farmers to separate husk from grains is
A) sieving
B) threshing
C) winnowing
D) hand picking
Answer:
D) hand picking

Question 44.
Camphor and powdered salt mixture is separated by
A) sublimation
B) filtration
C) winnowing
D) chromatography
Answer:
A) sublimation

Question 45.
On large scale, milk or curd is to separate the butter.
A) hand picked
B) centrifuged
C) decanted
D) filtered
Answer:
B) centrifuged

Question 46.
The principle in the process of sedimentation is
A) Gravity
B) Attraction
C) Repulsion
D) Condensation
Answer:
A) Gravity

Question 47.
Find out the correct order of an experiment
a) Pour some water in a plate
b) Take a whole stick of white chalk
c) Observe the colour pattern formed on chalk
d) Put an ink mark on the curved surface of chalk
Chalk is placed in the water
A) b, d, a, e, c
B) a, e, c, d, b
C) d, c, e, b, a
D) c, e, b, a, d
Answer:
A) b, d, a, e, c

Question 48.
When you kept the camphor in open air, it disappears after some hours. Name the phenomenon.
A) Sublimation
B) Distillation
C) Crystallization
D) Evaporation
Answer:
A) Sublimation

Question 49.
Find the part in the given diagram of chromatography?

A) Chalk mark
B) Ink mark
C) Water mark
D) Oil mark
Answer:
B) Ink mark

Question 50.
What is the purpose of keeping cotton ply at the end of the funnel?

A) To prevent loss of vapourised camphor
B) To release loss of vapourised camphor
C) To stop solid camphor from escaping
D) To prevent loss of heat
Answer:
A) To prevent loss of vapourised camphor

Question 51.
The conical flask receiving water from heated conical flask in the distillation process is .
A) With full of impurities
B) With full of salt
C) With full of crystals
D) Without impurities
Answer:
D) Without impurities

Question 52.
The leaves are separated from the tea by the method of
A) Chromatography
B) Sieving
C) Hand picking
D) Filtration
Answer:
D) Filtration

Question 53.
What process is involved in the sublimation?
A) Changing from solid state to gaseous state
B) Changing from liquid state to solid state
C) Changing from gaseous state to liquid state
D) Changing from liquids to gaseous state
Answer:
A) Changing from solid state to gaseous state

Question 54.
Find out the correct order of an experiment
a) Stir the solution with a glass rod.
b) You will find salt crystals and powder in the dish
c) Heat some salt water in a beaker
d) Continue heating till all the water in the beacker has evaporated
A) c, a, d, b
B) d, a, b, c
C) a, c, d, b
D) d, c, b, a
Answer:
A) c, a, d, b

Question 55.
Which substance is used instead of water to do evaporation experiment?
A) Sand
B) Soda water
C) Rice
D) Piece of chalk
Answer:
B) Soda water

Question 56.
The process of separation of sugar and flour is
A) Filtration
B) Sieving
C) Winnowing
D) Chromatography
Answer:
B) Sieving

Question 57.
Which substance given below undergoes sublimation
A) camphor
B) water
C) kerosene
D) crystal violet
Answer:
A) camphor

Question 58.
Generally we see sublimation process here in our surroúndings
A) lighting camphor in the temples
B) incense sticks formers
C) salt crystallization
D) drinking water
Answer:
A) lighting camphor in the temples

Question 59.
People prefer ………… and methods at home to clean rice and pulses for cooking
A) sedimentation, sublimation
B) sublimation, distillation
C) distillation, crystallisation
D) sedimentation, decantation
Answer:
D) sedimentation, decantation

Read the given lines.
Before administering injections to patients, doctors mix injection powder with some liquid.

Question 60.
What is the liquid along with injections used by doctors?
A) Filtration
B) Distilled water
C) Boiled water
D) Mud water
Answer:
B) Distilled water

Question 61.
Sublimation — Camphor
Crystallisation — Sea water
Winnowing — Husk from gram
What do we get from salt water by the process of Crystallisation?
A) Salt
B) Soil
C) Water
D) Rocks
Answer:
A) Salt

Read the given lines.
Filter paper is a sieve made of paper which has very fine holes. We can filter very small particles using this type of sieve.

Question 62.
What method is done to separate flour from mustard seeds?
A) Sedimentation
B) Distillation
C) Sieving
D) Decantation
Answer:
C) Sieving

Question 63.
Given picture shows heating of camphor on ……….

A) sublimation
B) sedimentation
C) crystallization
D) distillation
Answer:
A) sublimation

Question 64.
The given picture explains the process of …………….

A) sublimation
B) filtration
C) chromatography
D) sublimation
Answer:
C) chromatography

Question 65.
What is done through the apparatus shown In the given picture?

A) decantation
B) decantation
C) sedimentation
D) crystallisation
Answer:
B) decantation

Question 66.
I Identify the figure.
A) Sedimentation
B) Decantation
C) Crystallization
D) Distillation
Answer:
B) Decantation

Question 67.
The process which is shown in the diagram is …………..

A) Chromatography
B) Hand picking
C) Sieving
D) Winnowing
Answer:
C) Sieving

Question 68.
The experiment indicated in the following diagram.

A) Preparation of distilled water
B) Sublimation
C) Condensation of sugar
D) Preparation of salt water
Answer:
A) Preparation of distilled water

Question 69.
What is the man doing in the picture?

A) Decantation
B) Distillation
C) Winnowing
D) Chromatography
Answer:
C) Winnowing

Question 70.
For administering injections doctors use
A) Salt water
B) Distilled water
C) Sea water
D) Sugar water
Answer:
B) Distilled water

Question 71.
One of the following is not a hand picking technique.
A) Stones from rice
B) Rotten fruits from fresh fruits
C) Separating oranges and apples
D) Separate husk from grains
Answer:
D) Separate husk from grains

Question 72.
Different types of separation techniques help us
A) to get desirable quantities of material
B) to remove good varieties
C) to get undesirable material
D) to follow various techniques
Answer:
A) to get desirable quantities of material