What is sieving? Where can it be used?

Explanation:

Sieving is a technique by which fine particles from a mixture of bigger particles are separated using a sieve.

It is used in flour mills to remove husk and stones from the wheat.

Also, stones are removed from sand by sieving.

Final Answer:

Sieving is a technique by which fine particles from a mixture of bigger particles are separated using a sieve.

It is used in flour mills.