1.

Assertion (A): Permanent hardness of water is removed by treatment with washing soda. Reason(R): Washing soda reacts with soluble magnesium and calcium sulphate to form water-soluble compounds.

Answer»

Assertion (A): Permanent hardness of water is removed by treatment with washing soda.
Reason(R): Washing soda reacts with soluble magnesium and calcium sulphate to form water-soluble compounds.




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