What impurities are present in permanent hard water?
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1)For temporary hard water : The temporary hardness of water is due to the presence of bicarbonates of calcium and magnesium. It can be removed by : a) By boiling: When temporary hard water is boiled, bicarbonates of calcium and magnesium decompose to form insoluble calcium and magnesium carbonate.
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Permanent hardness of water is due to the presence of soluble salts of calcium and magnesium sulphate and chlorides
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