Chemistry · General Organic Chemistry

JEE Main 2025 — 24 January, Morning Shift — Question 39

Which of the following arrangements with respect to their reactivity in nucleophilic addition reaction is correct?

Option A:
benzaldehyde < acetophenone $<$ p-nitrobenzaldehyde $<$ p-tolualdehyde
Option B:
acetophenone $<$ benzaldehyde< p-tolualdehyde < p-nitrobenzaldehyde
Option C:
acetophenone $<$ p-tolualdehyde < benzaldehyde < p-nitrobenzaldehyde
Correct
Option D:
p-nitrobenzaldehyde $<$ benzaldehyde $<$ p-tolualdehyde < acetophenone

Answer: C

The rate of nucleophilic addition decreased due to steric crowding around carbonyl carbon

& increased by electron withdrawing group if the steric crowding is same hence the reactivity

towards nucleophilic addition will be

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