Question

The presence of hardness in excess of permissible limit causes

• A. calcium deficiency
• B. cardio-vascular problems
• C. skin discoluration
• D. increased laundry expenses

Answer 1

The correct option is D increased laundry expenses

Hardness of water is due to presence of carbonate and bicarbonate of $C{a}^{2+}$ and $M{g}^{2+}$ in water. Hard water does not cause any health problem, but it leads to lesser foam formation so increases the expense on laundary material.