Hardness of water may be termporary or permanent. Permanent hardnes s is due to the presence of

Hardness of water may be termporary or permanent. Permanent hardnes s

1.	Hardness of water may be termporary or permanent. Permanent hardnes s is due to the presence of
Answer» CHLORIDES of Ca and MG in water Sulphates of Ca and Mg in water Hydrogen carbonates of Ca and Mg in water Carbonates of ALKALI metals in water Solution :PERMANENT hardness of water is due to chlorides and sulphates of `Ca^(2+) and Mg^(2+)` .