Question

Which method used for removing permanent hardness of water?

Answer 1

Hey mate here is the answer of ur question;

Permanent hardness present in the water can be removed by treating it with soda water and using permutit process. Soluble salts of calcium and magnesium change into insoluble salts due to the treatment with sodium carbonate (washing soda).

Hope it helps u mate!!

pls mark it brainliest^_^