Hardness of water is due to the presence of which one of the following? 1.sodium chloride 2.sodium carbonate 3.calcium chloride 4.calcium carbonate
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Calcium chloride is the answer
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Hardness of water is due to the presence of calcium carbonate.
The basic difference that it has with soft water is its high concentration of minerals.
A major characteristic of hard water is that it doesn't foam when soap is added to it, it also leads to the formation of limescales in water heaters and kettles.
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