Question

Bleaching powder does not dissolve completely in water. why?

Answer 1

as we know there are spaces between molecules of liquid and the bleaching powder covers the space between them but if space is not left so the powder does not mix whole

Answer 2

Bleaching powder does not dissolve completely in water.

This is due to the fact that bleaching powder is a type of chemical salt from calcium metal, therefore, it is not completely soluble in water. The chemical formula is chemical formula $Ca(ClO)_2$ which is a "mixture" of calcium salt.

The chemically given name of bleaching powder is calcium hypochlorite.

It is used in the beaching process of the "paper pulps" and "fabrics" and also for the sterilization of water. It has little concentration of lime, therefore, it does not dissolve completely in water.