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student requires hard water for an experiment by using which Salt from laboratory the distilled water can made heard option number a Calcium sulphate, calcium carbonate option B calcium sulphate, calcium chloride of celibacy sodium chloride calcium carbonate option number sodium sulphate, calcium sulphate |
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Answer» Answer: Explanation: If hard water is not available it can be made in the laboratory by dissolving a little of calcium salt or MAGNESIUM salt in a beaker of water. The calcium and magnesium SALTS that can be used here are: calcium hydrogen carbonate, calcium SULPHATE, calcium CHLORIDE, magnesium hydrogen carbonate, magnesium sulphate or magnesium chloride. |
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