Question

Why does the hardness of water render it unfit for use in a 1. Boiler 2. For washing purposes

Answer 1

1.boil-Hard water contains calcium and magnesium.When we boil hard water these metals(Ca and Mg) form a hard covering on the utensil on which it is boiled.
2.washing-Hard water doesn't form lather or foam with soap. Hence hard water is unfit for washing.

Answer 2

Answer:

Explanation:

⚫ Boiler - the hardness of water causes boiler scale as soluble solids gets deposited on the walls of steam tubes make the bore of the tube narrow . When the pressure of the steam increase the boiler itself bursts.

⚫ For washing purposes - hard water forms scum and lather is not formed. Clothes do not get cleaned and soap gets wasted

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