Chapter 9. Methods of Separation in Everyday Life Class 6 Science Curiosity Solutions English Medium-40 Important MCQs with Answers

NCERT Solutions Class 6 Science Curiosity English Medium

Chapter 9. Methods of Separation in Everyday Life

Topic: 40 Important MCQs with Answers

Chapter 9. Methods of Separation in Everyday Life

The following multiple-choice questions are based on the latest NCERT Curiosity textbook and the CBSE competency-based pattern. They cover important concepts, applications, and daily-life situations related to methods of separation.

40 Important MCQs with Answer Key

Choose the correct answer for each question.

1. A mixture is a combination of

(A) One substance (B) Two or more substances (C) Only liquids (D) Only solids

2. Which method is used to remove stones from rice?

(A) Filtration (B) Handpicking (C) Evaporation (D) Churning

3. Which method separates grains from harvested stalks?

(A) Sieving (B) Winnowing (C) Threshing (D) Decantation

4. Winnowing separates substances based on differences in

(A) Colour (B) Weight (C) Shape (D) Smell

5. Which method is commonly used to separate flour from bran?

(A) Sieving (B) Churning (C) Filtration (D) Sedimentation

6. Filtration is mainly used to separate

(A) Two liquids (B) Insoluble solids from liquids (C) Salt from water (D) Husk from grain

7. Which method is used to obtain salt from seawater?

(A) Decantation (B) Evaporation (C) Churning (D) Winnowing

8. Which method is used to separate butter from curd?

(A) Filtration (B) Churning (C) Sieving (D) Handpicking

9. A magnet is used to separate

(A) Sand from water (B) Iron filings from sand (C) Rice from pulses (D) Salt from water

10. Which property is used in magnetic separation?

(A) Colour (B) Solubility (C) Magnetism (D) Density

11. Sedimentation is useful when

(A) Solids dissolve in water (B) Heavy insoluble particles settle down (C) Liquids mix completely (D) Grains are harvested

12. Decantation is done after

(A) Evaporation (B) Sedimentation (C) Sieving (D) Churning

13. Which material is commonly used as a filter?

(A) Plastic sheet (B) Filter paper (C) Glass plate (D) Aluminium foil

14. The liquid collected after filtration is called

(A) Residue (B) Sediment (C) Filtrate (D) Vapour

15. The solid left on the filter paper is called

(A) Filtrate (B) Residue (C) Solution (D) Mixture

16. Which of the following is a soluble substance?

(A) Sand (B) Chalk powder (C) Salt (D) Sawdust

17. Which method is suitable for separating sand from water?

(A) Filtration (B) Churning (C) Winnowing (D) Handpicking

18. Which method is used to separate tea leaves from tea?

(A) Evaporation (B) Filtration (C) Churning (D) Winnowing

19. Which process depends on the difference in particle size?

(A) Sieving (B) Churning (C) Evaporation (D) Magnetic separation

20. Which method is commonly used in flour mills?

(A) Sieving (B) Decantation (C) Churning (D) Sedimentation

21. Which mixture can be separated by handpicking?

(A) Rice and stones (B) Salt and water (C) Oil and water (D) Sugar solution

22. Which method requires moving air?

(A) Sieving (B) Winnowing (C) Churning (D) Filtration

23. Which of the following is an example of filtration?

(A) Making butter (B) Straining tea (C) Drying clothes (D) Harvesting crops

24. Which method removes dissolved water from salt solution?

(A) Evaporation (B) Sedimentation (C) Sieving (D) Churning

25. Which separation method is used in water purification plants?

(A) Filtration (B) Churning (C) Handpicking (D) Winnowing

26. Which mixture is best separated by magnetic separation?

(A) Sand and sugar (B) Iron filings and sand (C) Salt and sugar (D) Rice and wheat

27. Which process occurs before decantation?

(A) Condensation (B) Sedimentation (C) Churning (D) Sieving

28. Nasal hair works like

(A) A magnet (B) A filter (C) A sieve (D) A fan

29. Face masks mainly work on the principle of

(A) Filtration (B) Evaporation (C) Churning (D) Winnowing

30. Which method is NOT suitable for separating salt from water?

(A) Evaporation (B) Filtration (C) Crystallisation (D) Heating

31. Which method is used when one component is present in a very small quantity and is easily visible?

(A) Handpicking (B) Churning (C) Evaporation (D) Sedimentation

32. Which property helps in sieving?

(A) Difference in size (B) Difference in colour (C) Difference in smell (D) Difference in taste

33. Which method is commonly used by farmers after harvesting wheat?

(A) Threshing (B) Filtration (C) Churning (D) Evaporation

34. Which of the following is an insoluble substance?

(A) Sugar (B) Salt (C) Chalk powder (D) Jaggery

35. Which method is used to separate oil from water?

(A) Decantation (B) Sieving (C) Handpicking (D) Magnetic separation

36. Which separation method is based on density difference?

(A) Decantation (B) Handpicking (C) Sieving (D) Churning

37. Which of the following is NOT a method of separation?

(A) Winnowing (B) Photosynthesis (C) Filtration (D) Sieving

38. Which method is most suitable for separating muddy water?

(A) Sedimentation and filtration (B) Churning (C) Handpicking (D) Winnowing

39. Separation methods mainly depend upon the ________ of substances.

(A) Physical properties (B) Colour only (C) Smell only (D) Shape only

40. Which statement is correct?

(A) Every mixture can be separated by one method only.
(B) Different mixtures require different methods of separation.
(C) Filtration separates dissolved salt from water.
(D) Churning separates sand from water.

Answer Key

1-B, 2-B, 3-C, 4-B, 5-A, 6-B, 7-B, 8-B, 9-B, 10-C,
11-B, 12-B, 13-B, 14-C, 15-B, 16-C, 17-A, 18-B, 19-A, 20-A,
21-A, 22-B, 23-B, 24-A, 25-A, 26-B, 27-B, 28-B, 29-A, 30-B,
31-A, 32-A, 33-A, 34-C, 35-A, 36-A, 37-B, 38-A, 39-A, 40-B.

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