Hardness of water is due to presence of salts of | CGP Edu

Chemistry Hydrogen and Its Compounds ( Not in Syllabus ) Water or Hydride of Oxygen Single Correct MCQ

Published by: CGP EDU Academic Team

Published on: August 14, 2026

Hardness of water is due to presence of salts of

A

Na + and K +

B

Ca 2+ and Mg 2+

C

Ca 2+ and K +

D

Ca 2+ and Na +

Text Solution

Verified by Experts

The correct answer is:

Hardness of water is due to the presence of bicarbonates, chlorides and sulphates of and on it. These and ions react with the anions of fatty acids present in soaps to form curdy white precipitates. As a result, hard water does not produce lather with soap immediately.

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