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- 1. Multiple Choice
How are grain seeds removed from their stalks?
Sieving
Winnowing
Threshing
All of the above
- 2. Multiple Choice
What is a mixture?
A chemical combination of two or more different substances.
A physical combination of two or more different substances.
A chemically pure substance.
A special type of solution
- 3. Multiple Choice
Which of the following is essential to perform winnowing activity?
Wind
Water
Magnet
Filter paper
- 4. Multiple Choice
Hand picking method is effective in
solid mixture
Liquid mixture
Gaseous mixture
None of these
- 5. Multiple Choice
Salt is obtained from sea water by __________
Sublimation
Filtration
Evaporation
Hand picking
- 6. Multiple Choice
Butter is separated by curd
Filtration
churning
heating
sieving
- 7. Multiple Choice
The method of separation in which heavier and lighter components of a mixture are separated with the help of wind is called
Threshing
Winnowing
Sedimentation
Sieving
- 8. Multiple Choice
To separate a mixture of stones and wheat flour, the method used is
Sieving
Winnowing
Evaporation
Filtration
- 9. Multiple Choice
The filtration process is used at our home to separate
Paneer and liquid residue of sour milk
Tea and tea leaves
Fruit juice and fruit pulp
Wheat flour and husk
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