JEE Main 2024 Chemistry question

ChemistryOrganic Chemistry - Some Basic Principles and TechniquesJEE Main 2024

Match List-I with List-II: List-I (Mechanism steps): (A) Aniline: the lone pair on –NH delocalises into the benzene ring, shown by resonance structures with a positive charge on N and negative charge on the ring (B) Cyclohexene + H → carbocation (π electrons shift towards the attacking H) (C) Cyclohexene + CN → carbanion (π electrons shift away from the attacking CN) (D) Nitrobenzene: the ring π electrons are withdrawn into the –NO group, shown by resonance structures with a positive charge on the ring List-II (Effect): (I) – E effect (II) – R effect (III) + E effect (IV) + R effect Choose the correct answer from the options given below:

Answer: (A)

Solution

–NH₂ donates by resonance (+R); attack of H⁺ pulls π electrons towards the reagent (+E); attack of CN⁻ pushes them away (–E);

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Question ID VK-011430