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1. What is the process of separating grains from stalks called?
A. Winnowing
B. Handpicking
C. Threshing
D. Sieving
2. Which method is used to separate stones from grains by hand?
A. Winnowing
B. Filtration
C. Handpicking
D. Sieving
3. What is winnowing used to separate?
A. Stones from rice
B. Husk from grains
C. Salt from seawater
D. Water from sand
4. Sieving is used to separate:
A. Solids from liquids
B. Large solid particles from smaller ones
C. Liquids from gases
D. Liquids from solids
5. What is the method of separating butter from curd?
A. Filtration
B. Churning
C. Winnowing
D. Evaporation
6. What is the process of separating lighter components like husk from heavier grains?
A. Sedimentation
B. Winnowing
C. Handpicking
D. Decantation
7. The process of settling heavier particles at the bottom of a liquid is called:
A. Filtration
B. Winnowing
C. Sedimentation
D. Decantation
8. The process of separating salt from seawater is called:
A. Filtration
B. Sieving
C. Evaporation
D. Decantation
9. Which method is used to separate tea leaves from tea?
A. Winnowing
B. Decantation
C. Filtration
D. Sedimentation
10. Decantation is used to separate:
A. Oil from water
B. Salt from water
C. Tea leaves from tea
D. Butter from milk
11. Which of the following is NOT a method of separation?
A. Handpicking
B. Threshing
C. Filtration
D. Boiling
12. Which process uses a magnet to separate substances?
A. Filtration
B. Sieving
C. Magnetic separation
D. Evaporation
13. What is the process of separating insoluble solids from liquids using a filter?
A. Sieving
B. Filtration
C. Winnowing
D. Sedimentation
14. Which method is best suited to separate iron nails from sawdust?
A. Winnowing
B. Filtration
C. Handpicking
D. Magnetic separation
15. Which of the following methods separates two liquids based on their densities?
A. Winnowing
B. Filtration
C. Decantation
D. Handpicking
16. In which method does heavier solid particles settle down in a liquid?
A. Winnowing
B. Sedimentation
C. Filtration
D. Magnetic separation
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