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Question

Question: Temporary hardness of water can be removed by....

Temporary hardness of water can be removed by.

A

Addition of potassium permagenate

B

Boiling

C

Filtration

D

Addition of chlorine

Answer

Boiling

Explanation

Solution

By boiling temporary hardness of water can be removed.

Ca(HCO3)2→BoilCaCO3(insoluble)+H2O+CO2Ca(HCO_{3})_{2}\overset{\quad\text{Boil}\quad}{\rightarrow}\underset{(\text{insoluble})}{CaCO_{3}} + H_{2}O + CO_{2}