Question

Give reason :
1. A mixture can be separated by sieving, but not by winnowing or handpicking.
2. Sieving wheat flour is not advisable.
3. If there is no wind blowing, the process of winnowing cannot be undertaken.
4. If water can be purified by filtration, then why do we use the method of distillation?
5. We do not pluck seeds of cereal plants like we pluck fruits from a plant.
very short-answer type questions :
1. What do you mean by the term filtrate?
2. Name the method used to separate a mixture of sand and water.
3. After preparing tea, how can the tea leaves be separated from the brew?
4. Which method is employed to collect salt from sea-water?
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Answer 1

Answer:

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Explanation: