X is a separation technique based on the difference in weights of the solids in a solid - solid mixture. What is X?

Sieving

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Handpicking

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Winnowing

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Threshing

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Solution

The correct option is C Winnowing
In winnowing, lighter components of a mixture are separated from the relatively heavier components, with the help of a current of wind. For example, husk is separated from wheat. It is done by releasing the mixture into the air so that the wind blows away the lighter impurities, while the heavier grains fall back down for recovery.

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