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Permanent hardness of water is due to t...

Permanent hardness of water is due to the presence of

A

bnicarbonates of sodium and potassium

B

chlorides and suphates of sodium and potassium

C

chlorids and sulphates of calcium and magnesium

D

bicarbonates of calcium and magnesium

Text Solution

Verified by Experts

The correct Answer is:
C
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