Question

Assertion : Chlorine undergoes disproportionation reaction in alkaline medium. 

Reason : Cl₂ is an oxidising agent.

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are true but R is not correct explanation of A

(c) A is true but R is false

(d) A and R are false

Answer 1

The correct option is (b) Both A and R are true but R is not correct explanation of A.

Explanation:

Chlorine undergoes the simultaneous oxidation-reduction. Chlorine is simultaneously reduced to chloride ion (CI^-) and is oxidised to either CIO^- or ClO₃^- ion. Halogens (e.g. Cl) have a strong tendency to accept electrons, so they act as strong oxidising agents.