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Temporary hardness of water is removed i...

Temporary hardness of water is removed in Clark's process by adding

A

Caustic soda

B

Calgon

C

Borax

D

Lime

Text Solution

Verified by Experts

The correct Answer is:
d
Presence of Ca and Mg carbonates causes temporary hardness of water. These are removed by Clark's process.
`Ca(HCO_(3))_(2) + Ca(OH)_(2) to 2CaCO_(3) darr + 2H_(2)O`
`Mg(HCO_(3)) + 2Ca(OH)_(2) to 2CaCO_(3) darr + Mg(OH)_(2) +2H_(2)O`
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