Hard water is not fit for washing clothes because

Asseriton : Hard Water is not fit for washing clothes. Reason : It contains Ca^(+2) & Mg^(+2) ion which can forms ppt with soap & detergents.

The soap and the detergent make water suitable for washing clothes because they-

Soft water is not used for washing clothes.

(a) What is a soap? Why are soaps not suitable for washing clothes when the water is hard? (b) Explain the action of soap in removing an oily spot from a piece of cloth.

Hard water is not good for washing and industrial purposes.