Methods of Separation in Everyday Life Part 1: MCQs (Q1–Q25)

Part 1 — Questions 1 to 25 (Introduction & Basic Separation Methods)

1. The method used to separate stones from rice is

A. Filtration
B. Sedimentation
C. Handpicking ← Correct Answer
D. Evaporation
Explanation:
A) Wrong, used for liquids.
B) Used for solid-liquid mixtures.
C) Correct — handpicking separates small solid impurities from grains.
D) Removes dissolved solids.

2. The process of separating heavier particles that settle at the bottom in water is

A. Evaporation
B. Sedimentation ← Correct Answer
C. Winnowing
D. Sieving
Explanation:
B) Correct — heavy particles settle down in sedimentation.

3. After sedimentation, the clean water at the top is removed by

A. Evaporation
B. Filtration
C. Decantation ← Correct Answer
D. Winnowing
Explanation:
C) Correct — liquid is carefully poured out without disturbing solids.

4. The method of separating husk from grain by wind is

A. Sedimentation
B. Winnowing ← Correct Answer
C. Filtration
D. Sieving
Explanation:
B) Correct — husk is lighter and blown away by wind.

5. The process of separating tea leaves from tea is

A. Decantation
B. Filtration ← Correct Answer
C. Winnowing
D. Sieving
Explanation:
B) Correct — filter or strainer separates solids from liquid.

6. The method used to separate salt from seawater is

A. Winnowing
B. Sedimentation
C. Evaporation ← Correct Answer
D. Sieving
Explanation:
C) Correct — water evaporates, salt remains.

7. The process of removing water by heating to obtain dissolved solids is

A. Sedimentation
B. Filtration
C. Evaporation ← Correct Answer
D. Handpicking
Explanation:
C) Correct — evaporation removes solvent.

8. The method of separation used by farmers to separate grain from husk after threshing is

A. Sedimentation
B. Winnowing ← Correct Answer
C. Filtration
D. Handpicking
Explanation:
B) Correct — wind separates lighter husk from heavier grains.

9. The method of separation in which a sieve is used is

A. Winnowing
B. Sieving ← Correct Answer
C. Sedimentation
D. Evaporation
Explanation:
B) Correct — sieve separates different sized particles.

10. To separate cream from milk we use

A. Sedimentation
B. Evaporation
C. Centrifugation/Churning ← Correct Answer
D. Sieving
Explanation:
C) Correct — churning separates lighter cream from milk.

11. In decantation, the liquid is

A. Evaporated
B. Poured off carefully ← Correct Answer
C. Frozen
D. Crystallized
Explanation:
B) Correct — liquid is gently removed without solids.

12. The method used to separate butter from curd is

A. Sedimentation
B. Churning ← Correct Answer
C. Sieving
D. Evaporation
Explanation:
B) Correct — churning separates butter (fat) from buttermilk.

13. The method used to separate iron filings from sand is

A. Winnowing
B. Sieving
C. Magnetic separation ← Correct Answer
D. Evaporation
Explanation:
C) Correct — magnet attracts iron.

14. The method used to separate impurities from drinking water at home is

A. Winnowing
B. Filtration ← Correct Answer
C. Evaporation
D. Sieving
Explanation:
B) Correct — water filters remove impurities.

15. The process of separating mud from water by letting it settle is

A. Filtration
B. Sedimentation ← Correct Answer
C. Evaporation
D. Handpicking
Explanation:
B) Correct — solids settle by gravity.

16. The clean water above sediments is called

A. Solution
B. Slurry
C. Supernatant liquid ← Correct Answer
D. Residue
Explanation:
C) Correct — clear liquid left after sedimentation.

17. The solid left behind after filtration is called

A. Supernatant
B. Residue ← Correct Answer
C. Solution
D. Solvent
Explanation:
B) Correct — residue remains on filter paper.

18. The clear liquid collected after filtration is

A. Residue
B. Slurry
C. Filtrate ← Correct Answer
D. Sediment
Explanation:
C) Correct — filtrate passes through filter.

19. The method used to separate oil from water is

A. Filtration
B. Decantation/Separating funnel ← Correct Answer
C. Sieving
D. Evaporation
Explanation:
B) Correct — immiscible liquids separate by density.

20. Which of the following cannot be separated by filtration?

A. Sand + water
B. Tea leaves + tea
C. Salt + water ← Correct Answer
D. Chalk powder + water
Explanation:
C) Correct — salt dissolves, filtration won’t work.

21. The process used to separate different sized pebbles from sand is

A. Winnowing
B. Sieving ← Correct Answer
C. Evaporation
D. Filtration
Explanation:
B) Correct — sieve separates larger particles.

22. In centrifugation, heavier particles move

A. Outward due to centrifugal force ← Correct Answer
B. Upward
C. Downward only
D. Inward
Explanation:
A) Correct — centrifugal force pushes heavy particles outward.

23. The process of separation used in washing machines is

A. Evaporation
B. Filtration
C. Centrifugation ← Correct Answer
D. Sedimentation
Explanation:
C) Correct — spin cycle separates water from clothes.

24. In winnowing, the heavier grains

A. Fly away
B. Fall close by ← Correct Answer
C. Are lost in air
D. None of these
Explanation:
B) Correct — heavy grains fall down, husk flies away.

25. Which separation method is used in flour mills?

A. Evaporation
B. Winnowing
C. Sieving ← Correct Answer
D. Filtration
Explanation:
C) Correct — sieves remove husk/impurities from flour.

CBSE Class 6 MCQs, NCERT Chapter 9 MCQs, Separation Methods MCQs, Online CBSE Revision, Board Exam Practice, important MCQs for Class 6 Science Chapter 9 NCERT, CBSE Class 6 Methods of Separation MCQ practice online, NCERT-based separation techniques Class 6 exam questions, downloadable MCQs Chapter 9 Class 6 Science with answers, online learning Class 6 Science separation MCQs