Name the substances which make water (i) temporary hard (ii) permanent hard.

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Solution

The presence of hydrogen carbonates of calcium and magnesium makes water temporarily hard.
The presence of sulphates and chlorides of magnesium and calcium makes water permanently hard.

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Similar questions

Name the substance which makes water (i) temporary hard and (ii) permanent hard.

Name the substances in each case which causes:

(i) Temporary hardness in water

(ii) Permanent hardness in water

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