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| 1. |
Distinguish between temporary hardness and permanent hardness. |
| Answer» Solution :`({:("Temperature hardness","""Permanent hardness"),("(1) It is caused by bicarbonate of calcium and magnesium","(1) It is caused by chlorides and sulphates of calcium and magnesium"),("(2) It can be REMOVED by BOILING, by the addition of washing soda and CLARK's method", "(2) It can be removed by the addition of washing soda, PERMUTIT PROCESS and ion exchange method."):})/` | |