Harhardness of water is due to presence of which of the following(1) sodium chloride(2)clasium chloride(3)sodium carbonate(4) clasium carbonate

Harhardness of water is due to presence of which of the following(1) s

1.	Harhardness of water is due to presence of which of the following(1) sodium chloride(2)clasium chloride(3)sodium carbonate(4) clasium carbonate
Answer» It is DUE to the SODIUM CARBONATE