In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below each question.

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.

2 Views|Posted 8 months ago

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8 months ago

This is a assertion and reason answer type question as classified in NCERT Exemplar

(i) Statements A and R both are correct and R is the correct explanation of A.

MCl₂+Na₂CO₃→ MCO₃+2NaCl

MSO₄+Na₂CO₃→MCO₃+Na₂SO₄

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