Question

state the reasons for hardness in water

Answer 1

Hardness in water is caused by dissolved magnesium and calcium ions. These make it more difficult for the water to form a lather with soap. Temporary hardness is caused by dissolved calcium hydrogen carbonate (which is removed by boiling). Permanent hardness is caused by dissolved calcium sulfate (which is not removed by boiling)..

Answer 2

Answer:

Reasons For Hardness of Water :

the hardness of water due to the presence of dissolved bicarbonate , chlorides and sulphates of calcium and megnisium salts.

hope it helps uh....

@Rajula Ravalika