Question

Potash alum removes impurities from water by coagulation of impurities.

• A. True
• B. False

Answer 1

The correct option is A True

Formula of potash alum is $KAl(S{O}_4{)}_2.12H_{2}O$ or $K_{2}S{O}_{4}Al(S{O}_4{)}_{3}24H_{2}O$.

Potash alum is commonly used in water purification and in baking powder.

It coagulates the impurities in water.

Hence the given statement is true.