The process used for the removal of hard...

The process used for the removal of hardness of water is

A

Calgon

B

Baeyer

C

Serpeck

D

Hoope

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The correct Answer is:

A

Calgon is the trade name of sodium hexametaphosphate `Na_2[Na_4 (PO_3 )_6]` , which is used for the removal of hardness of water.

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