Q67Assertion & reason
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. (i) Statements A and R both are correct and R is the correct explanation of A. (ii) A is correct but R is not correct. (iii) A and R both are correct but R is not the correct explanation of A. (iv) A and R both are false.
- (i)Statements A and R both are correct and R is the correct explanation of A.
- (ii)A is correct but R is not correct.
- (iii)A and R both are correct but R is not the correct explanation of A.
- (iv)A and R both are false.