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Permanent Hardness

What is perma...

Question

What is permanent hardness of water?

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Solution

The hardness of water containing the chlorides and sulphates of calcium and magnesium is not removed even after boiling. This is permanent hardness of water.

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What causes the temporary and permanent hardness of water?

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Q. Hardness of water may be temporary or permanent. Permanent hardness is due to the presence of:

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Q. If excess of

C a (O H)_{2}

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Permanent Hardness

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