Practice Worksheet : Chapter 9 – Methods of Separation in Everyday Life Class 6 Science

(CBSE Class 6 Science – Curiosity Book)

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Class 6 Science – Chapter 9 Methods of Separation in Everyday Life – Practice Worksheet

Complete Worksheet for Class 6 Science – Chapter 9: Methods of Separation in Everyday Life (Curiosity Textbook).

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SET – 1 (20 Marks)

Class Test Paper – Chapter 9

Section A – Very Short Answer (1 × 4 = 4 marks)

1. What is winnowing?
2. Name the method used to separate stones from rice.
3. What is meant by residue?
4. What is a sieve?

Section B – Fill in the Blanks (1 × 4 = 4 marks)

5. The process of separating butter from curd is called ________.
6. ________ is left behind on the filter paper after filtration.
7. Salt solution can be separated by ________.
8. The water removed after settling of particles is called ________.

Section C – MCQs (1 × 4 = 4 marks)

9. Churning separates:
   (a) Sand and water (b) Butter and buttermilk (c) Salt and water (d) Oil and water
10. A tea strainer works on the principle of:
    (a) Magnetic separation (b) Filtration (c) Evaporation (d) Decantation
11. Which separates heavier particles by settling down?
    (a) Sieving (b) Winnowing (c) Sedimentation (d) Evaporation
12. Which mixture can be separated by handpicking?
    (a) Salt and water (b) Rice and stones (c) Mud and water (d) Oil and water

Section D – Match the Following (1 × 2 = 2 marks)

a. Sedimentation  i. Tea leaves
b. Filtration    ii. Heavy particles settle

Section E – Short Answer (2 × 2 = 4 marks)

14. Define evaporation with an example.
15. What is magnetic separation?

Section F – Long Answer (1 × 2 = 2 marks)

16. Explain sieving and state where it is used.

ANSWERS: SET – 1 (20 Marks)

Class Test Paper – Chapter 9 (With Answers)

Section A – Very Short Answer (1 × 4 = 4 marks)

1. What is winnowing?
   Answer: Winnowing is the method of separating lighter husk from heavier grains using wind or air.
2. Name the method used to separate stones from rice.
   Answer: Handpicking.
3. What is meant by residue?
   Answer: The insoluble solid left behind on the filter paper after filtration is called residue.
4. What is a sieve?
   Answer: A sieve is a tool with small holes used to separate solid mixtures based on particle size.

Section B – Fill in the Blanks (1 × 4 = 4 marks)

5. The process of separating butter from curd is called ________.
   Answer: churning
6. ________ is left behind on the filter paper after filtration.
   Answer: Residue
7. Salt solution can be separated by ________.
   Answer: evaporation
8. The water removed after settling of particles is called ________.
   Answer: decant

Section C – MCQs (1 × 4 = 4 marks)

9. Churning separates:
   (a) Sand and water (b) Butter and buttermilk (c) Salt and water (d) Oil and water
   Answer: (b) Butter and buttermilk
10. A tea strainer works on the principle of:
    (a) Magnetic separation (b) Filtration (c) Evaporation (d) Decantation
    Answer: (b) Filtration
11. Which separates heavier particles by settling down?
    (a) Sieving (b) Winnowing (c) Sedimentation (d) Evaporation
    Answer: (c) Sedimentation
12. Which mixture can be separated by handpicking?
    (a) Salt and water (b) Rice and stones (c) Mud and water (d) Oil and water
    Answer: (b) Rice and stones

Section D – Match the Following (1 × 2 = 2 marks)

a. Sedimentation → ii. Heavy particles settle
b. Filtration → i. Tea leaves

Section E – Short Answer (2 × 2 = 4 marks)

14. Define evaporation with an example.
    Answer: Evaporation is the process in which a liquid changes to vapour. Example: Salt obtained from seawater by evaporation.
15. What is magnetic separation?
    Answer: Magnetic separation is the process of separating magnetic substances like iron from non-magnetic materials using a magnet.

Section F – Long Answer (1 × 2 = 2 marks)

Explain sieving and state where it is used.
Answer: Sieving separates solid mixtures based on the difference in particle size. It is used in kitchens to separate bran from flour and at construction sites to separate stones from sand.

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SET – 2 (20 Marks)

Class Test Paper – Chapter 9

Section A – Very Short Answer (1 × 4 = 4 marks)

1. Define mixture.
2. What does filtration separate?
3. Name the device used to churn curd.
4. What is husk?

Section B – Fill in the Blanks (1 × 4 = 4 marks)

5. The separation of grain from stalk is called ________.
6. Sieving is done when the components are of different ________.
7. A magnet attracts ________ substances.
8. The clear liquid obtained after sedimentation is removed by ________.

Section C – MCQs (1 × 4 = 4 marks)

9. The process used to obtain salt from seawater is:
   (a) Filtration (b) Evaporation (c) Magnetic separation (d) Sieving
10. The method used to separate iron nails from sand:
    (a) Handpicking (b) Churning (c) Magnetic separation (d) Winnowing
11. The process used to remove bran from flour:
    (a) Sieving (b) Decantation (c) Filtration (d) Sedimentation
12. In decantation, the liquid is:
    (a) Filtered (b) Heated (c) Poured out slowly (d) Mixed

Section D – Match the Following (1 × 2 = 2 marks)

a. Handpicking  i. Wheat grains and husk
b. Winnowing   ii. Stones and pulses

Section E – Short Answer (2 × 2 = 4 marks)

14. Explain decantation.
15. Why is filtration used?

Section F – Long Answer (1 × 2 = 2 marks)

16. Describe magnetic separation with an activity example.

ANSWERS: SET – 2 (With Answers)

Section A – Very Short Answer

1. Define mixture.
   Answer: A mixture is a combination of two or more substances that can be separated physically.
2. What does filtration separate?
   Answer: Filtration separates insoluble solids from liquids.
3. Name the device used to churn curd.
   Answer: Mathni (churner).
4. What is husk?
   Answer: Husk is the light outer covering of grains.

Section B – Fill in the Blanks

5. The separation of grain from stalk is called ________.
   Answer: threshing
6. Sieving is done when the components are of different ________.
   Answer: sizes
7. A magnet attracts ________ substances.
   Answer: magnetic
8. The clear liquid obtained after sedimentation is removed by ________.
   Answer: decantation

Section C – MCQs

9. The process used to obtain salt from seawater is:
   Answer: (b) Evaporation
10. The method used to separate iron nails from sand:
    Answer: (c) Magnetic separation
11. The process used to remove bran from flour:
    Answer: (a) Sieving
12. In decantation, the liquid is:
    Answer: (c) Poured out slowly

Section D – Match the Following

a. Handpicking → ii. Stones and pulses
b. Winnowing → i. Wheat grains and husk

Section E – Short Answer

14. Explain decantation.
    Answer: Decantation is the process of pouring out the clear upper liquid after heavier particles settle at the bottom.
15. Why is filtration used?
    Answer: Filtration is used to remove insoluble impurities from liquids, such as tea leaves from tea.

Section F – Long Answer

Describe magnetic separation with an activity example.
Answer: Magnetic separation uses magnets to remove magnetic materials like iron from mixtures. Example: A magnet removes iron nails from sawdust.

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SET – 3 (20 Marks)

Class Test Paper – Chapter 9

Section A – Very Short Answer (1 × 4 = 4 marks)

1. What is residue?
2. What is filtrate?
3. Give one example of a filter.
4. What is chhach (buttermilk) obtained from?

Section B – Fill in the Blanks (1 × 4 = 4 marks)

5. In filtration, the clear water collected in the flask is called ________.
6. Threshing separates grains from ________.
7. ________ is used when a solid is insoluble in a liquid.
8. Fish are caught using a net that works like ________.

Section C – MCQs (1 × 4 = 4 marks)

9. The process in which water vapour leaves dissolved solids behind:
   (a) Sieving (b) Evaporation (c) Magnetic separation (d) Winnowing
10. Which mixture can be separated using a sieve?
    (a) Sand and water (b) Iron and sulphur (c) Flour and bran (d) Oil and water
11. Muddy water becomes clear after:
    (a) Floating (b) Heating (c) Sedimentation (d) Churning
12. A filter paper has:
    (a) Large holes (b) No holes (c) Very fine pores (d) Sharp blades

Section D – Match the Following (1 × 2 = 2 marks)

a. Churning  i. Butter and buttermilk
b. Sieving  ii. Sand and pebbles

Section E – Short Answer (2 × 2 = 4 marks)

14. What is handpicking?
15. Write one use of winnowing.

Section F – Long Answer (1 × 2 = 2 marks)

16. Explain filtration with the help of a labelled diagram (text only).

ANSWERS: SET – 3 (With Answers)

Section A – Very Short Answer

1. What is residue?
   Answer: The solid left on filter paper after filtration.
2. What is filtrate?
   Answer: The clear liquid that passes through the filter paper.
3. Give one example of a filter.
   Answer: Cotton cloth.
4. What is chhach (buttermilk) obtained from?
   Answer: From curd after churning.

Section B – Fill in the Blanks

5. In filtration, the clear water collected in the flask is called ________.
   Answer: filtrate
6. Threshing separates grains from ________.
   Answer: stalk
7. ________ is used when a solid is insoluble in a liquid.
   Answer: Filtration
8. Fish are caught using a net that works like ________.
   Answer: filtration

Section C – MCQs

9. The process in which water vapour leaves dissolved solids behind:
   Answer: (b) Evaporation
10. Which mixture can be separated using a sieve?
    Answer: (c) Flour and bran
11. Muddy water becomes clear after:
    Answer: (c) Sedimentation
12. A filter paper has:
    Answer: (c) Very fine pores

Section D – Match the Following

a. Churning → i. Butter and buttermilk
b. Sieving → ii. Sand and pebbles

Section E – Short Answer

14. What is handpicking?
    Answer: Handpicking is manually selecting unwanted particles like stones from grains.
15. Write one use of winnowing.
    Answer: Winnowing is used to separate husk from wheat grains.

Section F – Long Answer

Explain filtration with the help of a labelled diagram (text only).
Answer: Filtration separates insoluble solids using filter paper placed in a funnel, where residue remains on the paper and filtrate collects below.

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SET – 4 (20 Marks)

Class Test Paper – Chapter 9

Section A – Very Short Answer (1 × 4 = 4 marks)

1. Define threshing.
2. What does a sieve do?
3. What is a mixture?
4. Name one magnetic material.

Section B – Fill in the Blanks (1 × 4 = 4 marks)

5. The process of separating husk from grains using wind is ________.
6. Cotton cloth can act as a ________.
7. Peanuts and skins can be separated by ________.
8. Heavy particles settle down during ________.

Section C – MCQs (1 × 4 = 4 marks)

9. Which is used to separate sand from water?
   (a) Filtration (b) Evaporation (c) Decantation (d) Sieving
10. Sieving separates mixtures based on:
    (a) Weight difference (b) Size difference (c) Colour difference (d) Taste difference
11. Tea leaves are separated from tea by:
    (a) Condensation (b) Filtration (c) Freezing (d) Magnetic separation
12. In winnowing, the heavier component:
    (a) Flies away (b) Dissolves (c) Falls down vertically (d) Sticks to the tray

Section D – Match the Following (1 × 2 = 2 marks)

a. Evaporation  i. Salt from seawater
b. Magnetic separation ii. Iron nails and sawdust

Section E – Short Answer (2 × 2 = 4 marks)

14. Write two examples of mixtures.
15. Why is winnowing done in open air?

Section F – Long Answer (1 × 2 = 2 marks)

16. Explain how salt is obtained from seawater.

ANSWERS: SET – 4 (With Answers)

Section A – Very Short Answer

1. Define threshing.
   Answer: Threshing is the process of beating stalks to separate grains.
2. What does a sieve do?
   Answer: A sieve separates solids based on particle size.
3. What is a mixture?
   Answer: A mixture contains two or more substances mixed physically.
4. Name one magnetic material.
   Answer: Iron.

Section B – Fill in the Blanks

5. The process of separating husk from grains using wind is ________.
   Answer: winnowing
6. Cotton cloth can act as a ________.
   Answer: filter
7. Peanuts and skins can be separated by ________.
   Answer: blowing air
8. Heavy particles settle down during ________.
   Answer: sedimentation

Section C – MCQs

9. Which is used to separate sand from water?
   Answer: (a) Filtration
10. Sieving separates mixtures based on:
    Answer: (b) Size difference
11. Tea leaves are separated from tea by:
    Answer: (b) Filtration
12. In winnowing, the heavier component:
    Answer: (c) Falls down vertically

Section D – Match the Following

a. Evaporation → i. Salt from seawater
b. Magnetic separation → ii. Iron nails and sawdust

Section E – Short Answer

14. Write two examples of mixtures.
    Answer: Sand and water; flour and bran.
15. Why is winnowing done in open air?
    Answer: Because wind helps blow away lighter husk while heavier grains fall down.

Section F – Long Answer

Explain how salt is obtained from seawater.
Answer: Seawater is kept in shallow pits; water evaporates in sunlight, leaving salt behind.

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SET – 5 (20 Marks)

Class Test Paper – Chapter 9

Section A – Very Short Answer (1 × 4 = 4 marks)

1. Define filtration.
2. What is winnowing used for?
3. What is the purpose of churning?
4. Name the method used to separate oil from water.

Section B – Fill in the Blanks (1 × 4 = 4 marks)

5. Salt solution is a ________ mixture.
6. Mud collected on filter paper is called ________.
7. Oil and water form ________ layers.
8. ________ is used to separate grains from stalks.

Section C – MCQs (1 × 4 = 4 marks)

9. The method used for separating light husk from heavy grains:
   (a) Filtration (b) Sieving (c) Winnowing (d) Decantation
10. Which is an example of magnetic separation?
    (a) Flour and bran (b) Iron and sand (c) Salt and water (d) Mud and water
11. Decantation is used when:
    (a) Both components dissolve (b) One settles down (c) Both are gases (d) Both are liquids
12. The clear water after sedimentation is called:
    (a) Filtrate (b) Residue (c) Decant (d) Sludge

Section D – Match the Following (1 × 2 = 2 marks)

a. Decantation  i. Pouring clear liquid
b. Threshing  ii. Removing grains from stalk

Section E – Short Answer (2 × 2 = 4 marks)

14. Write one use of decantation.
15. Explain why filtration cannot separate salt from water.

Section F – Long Answer (1 × 2 = 2 marks)

16. Describe winnowing with an example.

ANSWERS: SET – 5 (With Answers)

Section A – Very Short Answer

1. Define filtration.
   Answer: Filtration is the process of removing insoluble solids from liquids using a filter.
2. What is winnowing used for?
   Answer: For separating lighter husk from heavier grains.
3. What is the purpose of churning?
   Answer: To separate butter from curd.
4. Name the method used to separate oil from water.
   Answer: Decantation.

Section B – Fill in the Blanks

5. Salt solution is a ________ mixture.
   Answer: homogeneous
6. Mud collected on filter paper is called ________.
   Answer: residue
7. Oil and water form ________ layers.
   Answer: separate
8. ________ is used to separate grains from stalks.
   Answer: Threshing

Section C – MCQs

9. The method used to separate light husk from heavy grains:
   Answer: (c) Winnowing
10. Which is an example of magnetic separation?
    Answer: (b) Iron and sand
11. Decantation is used when:
    Answer: (b) One settles down
12. The clear water after sedimentation is called:
    Answer: (c) Decant

Section D – Match the Following

a. Decantation → i. Pouring clear liquid
b. Threshing → ii. Removing grains from stalk

Section E – Short Answer

14. Write one use of decantation.
    Answer: Decantation is used to separate clear water from muddy water.
15. Explain why filtration cannot separate salt from water.
    Answer: Because salt dissolves completely and passes through filter pores.

Section F – Long Answer

Describe winnowing with an example.
Answer: Winnowing uses air to blow away lighter husk while heavier grains fall; used by farmers for separating wheat and husk.

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