Question

Winnowing food grains which force

Answer 1

Answer:

Question:

Winnowing food grains which force?

Answer:

The forces acting while winnowing food grain are muscular and gravitational forces applied by the body muscles and earth respectively.

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Answer 2

Winnowing removes the lighter chaff from the heavier grains.

Explanation:

Winnowing is the process of removing the lighter impurities from the grain. The impure grain is made to fall from a certain height vertically while the wind is made to blow horizontally having enough speed to just carry away the lighter impurities and let the grains fall down vertically.

The naturally blowing winds can also be used in this process to make it energy efficient.

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TOPIC: mixture separation

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