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8. 500 ml of a sample of water contains 0.5mg of CaCl2 and 0.5mg of MgCl2.The degree of hardness of water is (1)1.95 ppm (2)2.25ppm (3)2.90ppm (4)0.95ppm |
| Answer» 8. 500 ml of a sample of water contains 0.5mg of CaCl2 and 0.5mg of MgCl2.The degree of hardness of water is (1)1.95 ppm (2)2.25ppm (3)2.90ppm (4)0.95ppm | |