Question

a mixture can be separated by sieving but not by winnowing and hand picking, give reason​

Answer 1

Answer:

Slightly large sized impurities can be separated by handpicking. The process used to separate grains from stalks is threshing. Winnowing is used to separate heavier and lighter components of a mixture by wind or by blowing air. By sieving and filtration, particles of different size are separated.

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