(a) Name the compounds responsible for

(i) Temporary hardness

(ii) Permanent hardness of water

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Solution

Temporary hard water is water that contains bicarbonates of calcium and magnesium dissolved in it.

Permanent hard water is that water which contains dissolved sulphates and chlorides of calcium and magnesium.

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Similar questions

a) What are the causes for

i) Temporary hardness ii) Permanent hardness

b) Why does the hardness of water render it unfit for use in a i) boiler ii) for washing purposes.

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

Name the substances in each case which causes:

(i) Temporary hardness in water

(ii) Permanent hardness in water

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

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