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Which of the following methods is used f...

Which of the following methods is used for the removal of temporary hardness of water?

A

Treatement with washing soda

B

Calgon method

C

lon-exchange method

D

clark's method

Text Solution

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The correct Answer is:
D
Clark.s method is used for the removal of temorary hardness of water. In Clark.s method, slaked lime is added to the temporary hard water. Insoluble calcium carbonate precipitates out and no longer produce hardness.
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