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A water sample of 1 litre contains 81 mg of Ca(HCO3)2 ,111mg of CaCl2 and 9.5mg of MgCl2. Its hardness will be |
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Answer» A water sample of 1 litre contains 81 mg of Ca(HCO3)2 ,111mg of CaCl2 and 9.5mg of MgCl2. Its hardness will be |
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