Q4. What is sieving? Where is it used?
Sieving allows the fine flour particles to pass through the holes of the sieve while the bigger impurities remain on the sieve.
In a flour mill, impurities like husk and stones are removed from wheat before grinding it by sieving.
Sieving is a process by which fine particles are separated from bigger particles by using a sieve. It is used in flour mill or at construction sites. In flour mill, impurities like husks and stones are removed from wheat. Pebbles and stones are removed from sand by sieving.