1. Name and describe briefly a method which can be helpful in separating a mixture of husk from grains. What is the principle of this method?

By using the process of winnowing, husk can be separated from grains.

When the mixture is allowed to fall down from a height, the lighter husk is carried away by air and reaming falls on the ground.

This method is based on the principle that a mixture with components of different weights, the lighter particles are blown away by wind.