Permanent hardness of water is due to the presence of ........

General Science (Easy) Chemistry

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Permanent hardness of water is due to the presence of

Sulphates of sodium and potassium

Sulphates of magnesium andcalcium

Carbonates of sodium and magnesium

Bicarbonates of magnesium and calcium

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Explanation:

Permanent hardness is hardness (mineral content) that cannot be removed by boiling. When this is the case, it is usually caused by the presence of calcium sulfate and/or magnesium sulfates in the water, which do not precipitate out as the temperature increases.