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Byju's Answer
Standard XII
Chemistry
Hardness of Water and Treatment
Hardness of w...
Question

Hardness of water is mainly due to the dissolved salts of ________ and ________.

A
calcium and magnesium
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B
calcium and sodium
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C
sodium and magnesium
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D
calcium and potassium
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Solution

The correct option is A calcium and magnesium
Hardness of water is mainly due to the dissolved salts of calcium and magnesium.

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