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Question

Both temporary and permanent hardness in water is removed by:

A
boiling
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B
filtration
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C
distillation
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D
decantation
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Solution

The correct option is C distillation
Both temporary and permanent hardness in water is removed by distillation. Temporary hardness can be removed by boiling and filtration. Permenant hardnesscan be removed by: (1) adding washing soda, (2) permutit method (3) by using ion exchange resins.

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