First slide

Hardness of water

Question

Temporary hardness of water can be removed
A) By Clark’s process
B) By Boiling water

Easy

A

Only A
B

Only B
C

Both A and B
D

Neither A nor B

Solution

Temporary hardness of water can be removed by 3 ways
(1) By boiling
(2) By heating with washing soda [Na₂CO₃ . 10H₂O]
(3) By clark's process: [Reagent is Ca(OH)₂].

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