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Hardness of water is due to dissolved im...

Hardness of water is due to dissolved imurities of

A

Calcium and magnesium salts

B

Barium and magnesium salts

C

Calcium and strontium salts

D

Sodium and Potassium salts

Text Solution

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`H_2O_2` on oxidation gives `O_2` only in basic medium Hence (a) is the correct option
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