Question

the method that cannot be used for removing permanent hardness of water is

Answer 1

The method of boiling cannot be used for removing permanent hardness of water.
The ions that cause permanent hardness can be removed using water softner

Answer 2

Explanation:

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Permanent hardness of water cannot be removed by: -

• Toppr Permanent hardness of water cannot be removed by simple physical methods like boiling, filtering and distillation.