Question

After harvesting the crop,the farmer cannot separate husk from seed grins by handpicking.

Answer 1

• Handpicking: it is the separation method which is used to separate solid-solid components by using size and colour.
• Hence After harvesting the crop, the farmer cannot separate the husk from seed grins by handpicking.

Separating husk from grains:

• Winnowing: The seed grains obtained after threshing contain husk. To separate the husk from seed grains, a method called Winnowing is used by farmers.
• The lighter husk particles get carried away by the wind, whereas the heavier grains fall down vertically on the ground forming a heap.