What is sieving? When is it used?

Sieving is a method of separation used to separate particles of different sizes using a sieve or mesh. The sieve allows smaller particles to pass through while larger particles remain on it.

This method is commonly used when the components of a mixture differ in size but are solid in nature. It is widely used in both household and industrial processes.

For example, sieving is used to separate fine flour from bran, or to remove stones and larger impurities from sand. In construction, it helps in obtaining uniform sand for building work.

In simple terms, sieving is useful when you want to separate bigger particles from smaller ones quickly and efficiently.