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Question

Question: Which one of the following removes temporary hardness of water....

Which one of the following removes temporary hardness of water.

A

Slaked lime

B

Plaster of Paris

C

Cuprous

D

Hydrolith

Answer

Slaked lime

Explanation

Solution

Slaked lime removes temporary hardness of water.

Ca(OH)2+Ca(HCO3)2From hard water2CaCO3+2H2OCa(OH)_{2} + \underset{\text{From hard water}}{Ca(HCO_{3})_{2}} \rightarrow 2CaCO_{3} \downarrow + 2H_{2}O