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What causes the tempoary and permanent hardness of water ? |
| Answer» Solution :Presence of bicarbonates of calcium and magnesium , i.e., `(Ca(HCO_(3))_(2)` and `Mg(HCO_(3))_(2)` in water CAUSE temporary HARDNESS and presence of soluble chloride and sulphates of calcium and magnesium , i.e., `CaCl_(2), CaSO_(4), MgCl_(2) and MgSO_(4)` in water causes PERMANENT hardness. | |