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Byju's Answer
Standard VIII
Chemistry
Soaps and Detergents
The hardness ...
Question

The hardness of water is due to the presence of:

A

Calcium and Magnesium salts

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B

Sodium and Magnesium salts

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C

Calcium and Sodium salts

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D

Sodium salts

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Solution

The correct option is A

Calcium and Magnesium salts


The hardness of water is due the presence of dissolved salts of chlorides, sulphates and bicarbonates of calcium and magnesium.
Hard water is unfit for drinking and has many limitations in using them.

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