The method that cannot be used for removing permanent hardness of water is Options: A . &nbspadding sodium carbonate B . &nbspdistillation C . &nbspadding caustic soda D . &nbspboiling

The

Question

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

Options:

A . adding sodium carbonate

B . distillation

C . adding caustic soda

D . boiling

Answer: Option D

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