Home Chemistry Hydrogen and Its Compounds ( Not in Syllabus ) Water or Hydride of Oxygen A water sample is said to contain permanent …
Chemistry Hydrogen and Its Compounds ( Not in Syllabus ) Water or Hydride of Oxygen Single Correct MCQ
Published on: August 12, 2026

A water sample is said to contain permanent hardness if water contains.

A
Suphates and chlorides of calcium and magnesium
B
Carbonates of calcium and magnesium
C
Bicarbonates of calcium and magnesium
D
Sulphates and chlorides of sodium and potassium.

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Verified by Experts
The correct answer is:
A

: Permanent hardness of water is due to sulphates and chlorides of calcium and magnesium.

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