1.

Assertion: Although fluorine is more electronegative than chlorine, yet p-flurobenzoic acid is a weaker acid than p-chlorobenzoic acid. Reason: Due to matching sizes of 2p-orbitals of F and carbon, F has a stronger +R-effect than Cl.

Answer»

if both ASSERTION and RESON are TRUE, and REASON is the true EXPLANATION of the assertion.
If both assertion and reason are true, but reason is not the true explanation of the assertion.
if assertion is true, but reason is false.
If both assertion and reason are false.

Answer :A


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