Filtration

Adulteration

Churning

Sieving

Threshing

Process of separating insoluble solid
particles (residue) from a liquid
(filtrate) by using a filter paper

Make impure by the addition of
a foreign or inferior substance

Separate dissolved solid from a liquid

Separate solid particles of different sizes

Separate grains from their stalks by beating
them so hard that the grains are separated from their stalks