Multiple-choice questions :
1. Which method is used to separate tea leaves from prepared tea?
a) Sieving
b) Decantation
c) Winnowing
d) Handpicking
2. What method is commonly used by farmers to separate husk particles from grain seeds?
a) Decantation
b) Filtration
c) Threshing
d) Sedimentation
3. Which method is used to separate heavier and lighter components of a mixture by wind or blowing air?
a) Filtration
b) Threshing
c) Winnowing
d) Sedimentation
4. What is the process called when solid particles in a mixture do not pass through a filter paper and remain on the filter?
a) Filtration
b) Evaporation
c) Decantation
d) Sedimentation
5. Which method of separation is used to remove impurities like husk and stones from wheat before grinding?
a) Filtration
b) Threshing
c) Sedimentation
d) Handpicking
6. What is the process called when the water (along with the dust) is removed after the heavier component in a mixture settles?
a) Filtration
b) Evaporation
c) Decantation
d) Sedimentation
7. Which process involves the conversion of water into its vapour form?
a) Filtration
b) Evaporation
c) Decantation
d) Sedimentation
8. What is the process called when water vapour condenses and forms liquid water?
a) Filtration
b) Evaporation
c) Condensation
d) Sedimentation
9. How is the separation of salt, sand, and water achieved in the given paragraph?
a) Filtration, evaporation, and condensation
b) Sedimentation, decantation, and evaporation
c) Threshing, winnowing, and filtration
d) Handpicking, decantation, and sedimentation
10. What is the process called when the heavier component in a mixture settles after water is added to it?
a) Filtration
b) Evaporation
c) Sedimentation
d) Condensation
11. What is the process called when the water is removed from a mixture after the heavier component settles?
a) Filtration
b) Evaporation
c) Decantation
d) Condensation
12. Which method is used to separate impurities like stones from rice or pulses?
a) Filtration
b) Evaporation
c) Decantation
d) Handpicking
13. What method is commonly used by farmers to separate lighter husk particles from heavier seeds of grain?
a) Filtration
b) Threshing
c) Winnowing
d) Sedimentation
14. How are insoluble impurities separated from water?
a) Filtration
b) Evaporation
c) Decantation
d) Sedimentation
15. What is the process called when solid particles in a mixture do not pass through a filter paper and remain on the filter?
a) Filtration
b) Evaporation
c) Decantation
d) Sedimentation
16. Which method is commonly used to separate grain seeds from stalks?
a) Filtration
b) Threshing
c) Winnowing
d) Sedimentation
True/False:
1. Tea leaves are separated from the liquid by filtration while preparing tea.
2. Threshing is the process used to separate grain from stalks.
3. Handpicking is a convenient method of separating substances when impurities are not large in quantity.
4. Winnowing is a method used to separate heavier and lighter components of a mixture by wind or blowing air.
5. Filtration is a method commonly used by farmers to separate grain seeds from stalks.
6. Sedimentation is the process of converting water into its vapour form.
7. Decantation is the process of separating components of a mixture by pouring off the liquid layer.
8. Evaporation is the process of converting a liquid into its vapour form.
9. Filtration is a method used to separate larger impurities from substances like wheat, rice, or pulses.
10. Handpicking is a suitable method for separating small-sized impurities from substances.
11. Winnowing is a method used to separate husk particles from grain seeds.
12. Sedimentation is the process of separating components of a mixture based on their density.
13. Decantation is the process of separating components of a mixture using a strainer.
14. Evaporation is a suitable method for separating salt from water in a saltwater solution.
15. Filtration is a method used to separate solid particles from a liquid by passing it through a filter medium.
16. Threshing is a method used to separate heavier and lighter components of a mixture based on their size.
17. Sedimentation is the process of removing heavier impurities from a mixture by allowing them to settle down.
18. Decantation is a method used to separate solid particles from a liquid by pouring off the liquid layer.
19. Filtration is a method commonly used to separate liquid components from a mixture.
20. Handpicking is a method used to separate impurities based on their colour or shape.
21. Winnowing is a method used to separate smaller particles from larger particles based on their weight.
22. Sedimentation is the process of converting a liquid into its gaseous form.
23. Decantation is a method used to separate two immiscible liquids.
24. Evaporation is a method used to separate two miscible liquids.
25. Filtration is a method used to separate gas from a mixture.
26. Threshing is a method used to separate liquid components from a mixture.
27. Sedimentation is a method used to separate different-sized particles from a mixture.
28. Decantation is a method used to separate solid particles from a gas.
29. Evaporation is a method used to separate solid particles from a liquid.
30. Filtration is a method used to separate smaller particles from larger particles based on their shape.
31. Handpicking is a method used to separate gas from a mixture.
32. Winnowing is a method used to separate solid particles from a mixture using a sieve.
33. Sedimentation is the process of converting a solid into a liquid.
34. Decantation is a method used to separate different-sized particles based on their colour.
35. Evaporation is a method used to separate liquid components from a mixture based on their boiling points.
36. Filtration is a method used to separate liquid components from a mixture based on their freezing points.
37. Threshing is a method used to separate solid particles from a liquid by centrifugation.
38. Sedimentation is a method used to separate solid particles from a mixture by using a magnet.
39. Decantation is a method used to separate different-sized particles based on their solubility.
40. Evaporation is a method used to separate solid particles from a liquid by dissolving them.
41. Filtration is a method used to separate liquid components from a mixture based on their viscosity.
42. Handpicking is a method used to separate solid particles from a liquid by dissolving them.
43. Winnowing is a method used to separate different-sized particles based on their electrical conductivity.
44. Sedimentation is a method used to separate liquid components from a mixture based on their surface tension.
45. Decantation is a method used to separate solid particles from a liquid by sublimation.
46. Evaporation is a method used to separate different-sized particles based on their odour.
47. Filtration is a method used to separate solid particles from a liquid by adsorption.
48. Threshing is a method used to separate different-sized particles based on their melting points.
49. Sedimentation is a method used to separate liquid components from a mixture by distillation.
50. Decantation is a method used to separate solid particles from a liquid by precipitation.
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