Question

Assertion :The reaction of oxalic acid with acidified $KMn{O}_4$ is first, slow and then proceeds with faster speed. Reason: Acidified $KMn{O}_4$ is a strong oxidising agent

• A. If both (A) and (R) are true and (R) is the correct explanation of (A).
• B. If both (A) and (R) are true, but (R) is not the correct explanation of (A).
• C. If (A) is correct, but (R) is incorrect.
• D. If (A) and (R) are both incorrect.

Answer 1

The correct option is B If both (A) and (R) are true, but (R) is not the correct explanation of (A).

Reaction of oxalic acid with acidified $KMn{O}_4$ requires heat to proceed as oxalic acid is less soluble and should be warmed slightly so that reaction proceeds with faster speed.

Acidified $KMn{O}_4$ is a strong oxidising agent .

SO both assertion and reason are correct but reason is not correct explanation .

So B is correct answer.