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Q.

Separating the grain from chaff by wind is called ____.


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Detailed Solution

Separating the grain from chaff by wind is called winnowing.
Winnowing is the process of using wind or blowing air to separate the heavier and lighter components of a mixture. Farmers employ this procedure to separate heavy grain seeds from lighter husk particles. Hence, the separation of grain from chaff by the aid of wind is called winnowing.
  
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