a mixture can separated by sieving, but not by winnowing or handpicking - give reason
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Explanation:
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.
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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.
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