29 Apr 2022

Samacheer kalvi 6th Science Term 1 Unit 3 Answers

Samacheer Kalvi 6th Science Term 1 Unit 3 Book Back Questions and Answers:

Samacheer Kalvi 6th Standard Science Book Back 1 Mark and 2 Mark Question & Answers uploaded online and available PDF for free download. Class 6th New Syllabus Science Term 1 book back question & answer solutions guide available below for English Medium. Class sixth Std Science English Medium Term 1 Unit 3 Matter Around us book back answers given below. Students looking for class 6th Term I Unit 3 Questions and Answers can check below.

We also provide class 6th other units Book Back One and Two Mark Solutions Guide on our site. Students looking for a new syllabus 6th standard Science Term 1 Unit 3 Matter Around us Book Back Questions with Answer PDF:

For all three-term of 6th standard Science Book Back Answers English Medium – Samacheer kalvi 6th Science Book Back Answers

Samacheer Kalvi 6th Science Book Back Chapter 3 Term 1 Solution Guide PDF:

TN State Board Class 6th Science Subject Term 1 Unit 3 one mark and two mark solutions guide PDF available below.

6th Science – Term 1

Unit 3: Matter Around us

I. Choose the appropriate answer:

1. _____ is not made of matter.
(a) gold ring
(b) iron nail
(c) light ray
(d) oil drop
Answer: (c) light ray

2. 200 ml of water is poured into a bowl of 400 ml capacity. The volume of water now will be
(a) 400 ml
(b) 600 ml
(c) 200 ml
(d) 800 ml
Answer: (c) 200 ml

3. Seeds from water-melon can be removed by _____ method.
(a) hand-picking
(b) filtration
(c) magnetic separation
(d) decantation
Answer: (a) hand-picking

4. Lighter impurities like dust when mixed with rice or pulses can be removed by
(a) filtration
(b) sedimentation
(c) decantation
(d) winnowing
Answer: (d) winnowing

5. _____ is essential to perform winnowing activity.
(a) Rain
(b) Soil
(c) Water
(d) Air
Answer: (d) Air

6. The filtration method is effective in separating a mixture
(a) Solid-solid
(b) Solid-liquid
(c) liquid-liquid
(d) liquid-gas
Answer: (b) Solid-Liquid

7. From the following, _____ is not a mixture.
(a) coffee with milk
(b) lemon juice
(c) water
(d) ice cream embedded with nuts
Answer: (c) water

II. True or False. If False, give the correct statement.

1. Air is not compressible.
Answer: False. Air is highly compressible.

2. Liquids have no fixed volume but have a fixed shape.
False. Liquids have fixed volume but have no fixed shape.

3. Particles in solids are free to move.
False. Particles of solid can not move freely (or) Particles of liquid are free to move.

4. When pulses are washed with water before cooking, the water is separated from them by the process of filtration.
False. When pulses are washed with water before cooking the water is separated from them by the process of decantation.

5. Strainer is a kind of sieve that is used to separate a liquid from a solid.
Answer: True.

6. Grain and husk can be separated by winnowing.
Answer: True.

7. Air is a pure substance.
Answer: False. Air is a mixture of gases.

8. Butter from curds is separated by sedimentation.
Answer: False. Butter from curd is separated by Churning.

III. Match the following:

(a) Property                          Example
1. Breaks easily ( brittle)           a. Metal pan
2. Bends readily                          b. Rubber band
3. Can be stretched easily         c. Cotton wool
4. Gets compressed easily         d. Mud pot
5. Gets heated readily                e. Plastic wire


1. d
2. e
3. b
4. c
5. a

6th science chapter 3 book back answers

i.) Separation of visible undesirable components  – rice and stone – Hand-picking

ii.) Separating of heavier and lighter components – husk and paddy – Winnowing

iii.) Separation of insoluble impurities – water mixed with chalk powder – Filtration

iv.) Separation of magnetic component from non-magnetic components– iron impurities – Magnetic Separation

v.) Separation of solids from liquids – sand and water – Decantation

IV. Fill In the blanks:

  1. Matter is made up of ______
  2. In solids, the space between the particles is less than in ______
  3. Grains can be separated from their stalks by ______
  4. Chilies are removed from ‘upma’ by the ______ method.
  5. The method employed to separate clay particles from water is ______
  6. Among the following items: safety pins, pencil and rubber band, ______ will get attracted to a magnet.
  7. Water obtained from tube wells is usually ______ water.


  1. atoms
  2. liquids and gases
  3. Threshing
  4. handpicking
  5. Filtration
  6. Safety pins
  7. Impure

V. Complete the given analogy.

  1. Solid: rigidit :: gas: ______
  2. Large Inter-particle space: gas:: ______ :solid
  3. Solid: definite shape :: ______ : shape of the vessel.
  4. Husk-grains: winnowing:: Sawdust-Chalk piece : ______
  5. Murukku from hot oil: ______ : coffee powder residue from decoction: ______
  6. Iron – sulphur mixture : ______ :: Mustard seeds from Urad-dhal: rolling


  1. Flexibility.
  2. Little inter-particle space.
  3. Liquid.
  4. Filtration
  5. Filtration
  6. Magnetic separation.

VI. Give a very short answer.

1. Define the term matter?
Matter is defined as anything which occupies space and has mass.

2. How can husk or fine dust particles be separated from rice before cooking?

  1. The husk or fine dust particles can be separated from rice by washing the rice with water before cooking.
  2. The lighter impurities float while heavier rice grains sink to the bottom. (It is sedimentation).
  3. Then the water with the impurities is carefully poured away by decantation, leaving clean rice at the bottom.

3. Why do we separate mixtures?
We separate mixtures:

  1. to remove impurities or harmful components (eg: stones from rice),
  2. to separate useful component from other components (eg: petrol from petroleum)
  3. to obtain a substance in highly pure form (eg: gold from gold mines).

4. Give an example for mixture and justify your answer with reason.
Milk is an example for the mixture.
It contains water, fat, protein etc. Since two or more compounds are mixed in a physical combination, milk is a mixture.

5. Define sedimentation?
The settling down of a heavier component of a mixture, when allowed to remain undisturbed for some time, is called sedimentation.

6. Give the main difference between a pure substance and an impure substance.
Pure substance:

  1. It is made up of only one kind of particles
  2. Unadulterated

Impure substance:

  1. It is made up of two or more toxic particles
  2. Adulterated

Other Important links for Class 6th Book Back Answers:

Tamil Nadu Class 6th Standard Book Back Guide PDF, Click the link – 6th Book Back Questions & Answers PDF

For all three-term of 6th standard Science Book Back Answers English Medium – Samacheer kalvi 6th Science Book Back Answers English Medium 

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