Multiple choice

The presence of hardness in excess of permissible limit causes

  1. cardiovascular problems

  2. skin discolouration

  3. calcium deficiency

  4. increased laundry expenses
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

 Hardness of water means presence of carbonate and bicarbonate of Ca anf Mg in water as such does not cause any health related problem but precipitation when reacting with fatty acid (soap) and scale formation in the boiler. So, hardness will increase the expenses on laundary material like soap and shampoo, etc.

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