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Some substances when dissolved in water cause hardness of water.a. Which of the following substances cause hardness of water? Sodium chloride,Calcium bicarbonate, Calcium carbonate,Calcium sulfate, Magnesium sulfate, Calcium chloride, Magnesium carbonateb. The hardness due to which of the above salts cannot be removed by boiling? |
Answer» a. calcium bicarbonate, calcium sulfate, calcium chloride. b. The hardness of water containing the chlorides and sulphates of calcium and magnesium is not removed by boiling. |
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