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Hardness of Water and Treatment

Question

Both temporary and permanent hardness in water is removed by:
boiling
filtration
distillation
decantation

A

decantation

B

distillation

C

filtration

D

boiling

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Solution

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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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