Assertion: Temporary hardness can be removed by boiling.
Reason: Temporary hardness is due to the presence of magnesium and calcium hydrogen carbonates.
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Temporary hardness is due to presence of calcium and magnesium carbonates and bicarbonates . Boiling promotes the formation of carbonate from bicarbonate and precipitates calcium carbonate out of the solution , leaving water that is softer upon cooling . > Permanent hardness cannot be eliminated by boiling .
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