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The permanent hardness of water is due t...

The permanent hardness of water is due to the presence of

A

bicarbonates of sodium and potassium.

B

chlorides and sulphates of sodium and potassium

C

chlorides and sulphates of calcium and magnesium.

D

phosphates of sodium and potassium

Text Solution

Verified by Experts

The correct Answer is:
C
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