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 insoluble carbonates.

Assertion (A): Permanent hardness of water is removed by treatment wit

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 insoluble carbonates.
Answer» Statements (A) and R both are CORRECT and (R) is the correct explanation of (A) (A) is correct but (R) is not correct (A) and R both are correct but (R) is not the correct explanation of (A) (A) and (R) both are false Solution :Statements of assertion and REASON both are correct and reason is the correct explanation of assertion. `Na_2CO_3+ UNDERSET"(form hard water)"underset(CaSO_4)underset"or"(MgSO_4) to Na_2SO_4 + underset"(insoluble)"underset(CaCO_3) underset"or"(MgCO_3)`