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Permanent hardness is due to presence of soluble salts of Mg and Ca in the form of chlorides and sulphates in H2O . It can be removed by:
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The permanent hardness of water can be removed by boiling the water with:
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Which method can be used to remove BOTH temporary and permanent hardness of water together?
30. Water and Sewage treatment. Hardness in water Def: Water is said to be hard when it is difficult to form a lather with soap. It is caused by the presence. -
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When boiling water (for tea) sometimes a white foam forms on the top of the water? What causes this, and is the foam likely to be comprised of anything other than water? -
Both temporary and permanent hardness is removed on boiling water with:
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