Chloride and Sulphates of Calcium and Magnecium cause:
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causes the hardness of water
The hardness of water is due to the presence of soluble bicarbonates, chlorides and sulfates of calcium and magnesium.
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Explanation:
Permanent hardness (mineral content) is generally difficult to remove by boiling. If this occurs, it is usually caused by the presence of calcium sulfate/calcium chloride and/or magnesium sulfate/magnesium chloride in the water, which do not precipitate out as the temperature increases.
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