Air under pressure is blown into the filtered water. This process is called:

Economical use and avoiding the wastage of water is called:

The electricity produced by using the flow of water from a dam is called:

The setting of the suspended particles under the action of gravity is called:

Contamination of water by harmful substances and germs etc are called water:

The continuous circulation of water in nature is called:

Sea and ocean water contains large amount of salt and these make the water salty and is called:

__________ does not contain any dissolved salt.

A liquid substance that does not dissolve in water and forms a separate layer is called

The maximum mass of the solute that can be dissolved in 100g of the solvent at any specified temperature is called its: