CG Board Class 6 Science Separation of Matter MCQ
If you are looking for CG Board Class 6 Science Separation of Matter MCQ then you are at right place.
1. What is ORS a mixture of?
a) Lemon juice and sugar
b) Sugar and salt in water
c) Water and lemon juice
d) Salt and lemon juice
Answer: b) Sugar and salt in water
2. Why do we need separation of substances?
a) To make mixtures
b) To remove useful components
c) To remove non-useful components
d) To make them more complex
Answer: c) To remove non-useful components
3. Which method is used to separate small stones from pulses?
a) Sieving
b) Hand-picking
c) Winnowing
d) Threshing
Answer: b) Hand-picking
4. In construction sites, which method is used to separate pebbles from sand?
a) Hand-picking
b) Sieving
c) Winnowing
d) Loading
Answer: b) Sieving
5. Winnowing is used to separate:
a) Grain seeds from stalks
b) Iron from sand
c) Oil from water
d) Salt from water
Answer: a) Grain seeds from stalks
6. Which property is used in magnetic separation?
a) Solubility
b) Magnetic attraction
c) Density
d) Size
Answer: b) Magnetic attraction
7. The process where heavier particles settle down in a liquid is called:
a) Decantation
b) Sedimentation
c) Filtration
d) Loading
Answer: b) Sedimentation
8. A separating funnel is used to separate:
a) Solid from liquid
b) Two miscible liquids
c) Two immiscible liquids
d) Soluble substances
Answer: c) Two immiscible liquids
9. Loading is done using:
a) Magnet
b) Alum
c) Filter paper
d) Sieve
Answer: b) Alum
10. Centrifugation is used in:
a) Separating cream from milk
b) Separating salt from water
c) Separating iron from sand
d) Separating pebbles from sand
Answer: a) Separating cream from milk
11. In water purification plants, which chemical is used to remove harmful organisms?
a) Alum
b) Chlorine
c) Iodine
d) Salt
Answer: b) Chlorine
12. The process of obtaining salt from seawater uses:
a) Filtration
b) Evaporation
c) Distillation
d) Sublimation
Answer: b) Evaporation
13. Crystallization is used to obtain pure:
a) Common salt
b) Iron filings
c) Copper sulphate crystals
d) Sand
Answer: c) Copper sulphate crystals
14. Distillation is a combination of:
a) Evaporation and filtration
b) Evaporation and condensation
c) Condensation and sedimentation
d) Filtration and condensation
Answer: b) Evaporation and condensation
15. Which substance shows sublimation property?
a) Sugar
b) Salt
c) Camphor
d) Copper sulphate
Answer: c) Camphor
16. The ceramic candle in a water filter is used for:
a) Evaporation
b) Filtration
c) Distillation
d) Sublimation
Answer: b) Filtration
17. Water cycle in nature is an example of:
a) Evaporation
b) Condensation
c) Distillation
d) Filtration
Answer: c) Distillation
18. To separate a mixture of iron filings, sand and salt, how many methods are required?
a) One
b) Two
c) Three
d) Four
Answer: c) Three
19. Which method would you use to separate oil and water?
a) Filtration
b) Separating funnel
c) Evaporation
d) Sieving
Answer: b) Separating funnel
20. The process of separating cream from milk is based on:
a) Density difference
b) Magnetic properties
c) Size of particles
d) Solubility
Answer: a) Density difference
21. Which method is used to obtain pure water from seawater?
a) Filtration
b) Evaporation
c) Distillation
d) Decantation
Answer: c) Distillation
22. In threshing, separation is based on:
a) Size difference
b) Weight difference
c) Color difference
d) Shape difference
Answer: b) Weight difference
23. Which of these cannot be separated by sublimation?
a) Camphor
b) Ammonium chloride
c) Common salt
d) Naphthalene
Answer: c) Common salt
24. The method used to separate flour from bran is:
a) Hand-picking
b) Winnowing
c) Sieving
d) Threshing
Answer: c) Sieving
25. Which process involves both heating and cooling?
a) Filtration
b) Distillation
c) Decantation
d) Sieving
Answer: b) Distillation
26. Loading method makes impurities:
a) Float on water
b) Dissolve in water
c) Become heavier and settle down
d) Evaporate from water
Answer: c) Become heavier and settle down
27. Which property is used in hand-picking method?
a) Size
b) Shape
c) Color
d) Magnetic property
Answer: b) Shape
28. Filtration cannot separate:
a) Sand from water
b) Salt from water
c) Mud from water
d) Stones from water
Answer: b) Salt from water
29. Which method would you use to separate a mixture of salt and ammonium chloride?
a) Filtration
b) Sublimation
c) Crystallization
d) Evaporation
Answer: b) Sublimation
