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Question

Which of the following is essential for winnowing?

A
Sieve
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B
Water
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C
Wind
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D
Light
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Solution

The correct option is C Wind
Winnowing is a method of separation which is used to separate mixtures whose components differ in weight. The difference in their weight should be such that the lighter component gets blown away by wind. While the heavier component falls down. So, wind is essential for winnowing.

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