Question

A substance which is added to remove the both temporary and permanent hardness in water

Answer 1

Explanation:

washing soda (sodium carbonate)

Answer 2

Answer:Both temporary and permanent hardness of water can be removed by using water softeners, these are available in market . A water softener is a synthetic resin which adsorb the ions causing hardness of water. One can heat (boil) the water to remove hardness. Treatment of water with soda lime or washing soda also removes the hardness.

Explanation: