Question

why is hand picking necessary after winnowing​

Answer 1

Answer:

because after winnowing also some unwanted particles are there

Explanation:

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Answer 2

Answer:

Hand Picking is necessary after winnowing because through winnowing, the wind blows away the lighter chaff while the heavier and slightly larger sized impurities fall back down and mix with the grain. In such situations, the hand picking is a convenient method of separating above mentioned impurities.

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