Exams › JEE Main › Chemistry

CH₃Br + Nu⁻ → CH₃ – Nu + Br⁻ The decreasing order of the rate of the above reaction with nucleophiles (Nu⁻) A to D is [Nu⁻ = (A) PhO⁻, (B) AcO⁻, (C) HO⁻, (D) CH₃O⁻]

1. D > C > A > B
2. D > C > B > A
3. A > B > C > D
4. B > D > C > A

Correct answer: D > C > A > B

Solution

The correct order reflects the nucleophilicity of the species involved, where CH₃O⁻ is the strongest nucleophile due to its high electron density, followed by HO⁻, which is also strong but less so than CH₃O⁻. PhO⁻ and AcO⁻ are weaker nucleophiles due to resonance stabilization, making them less reactive in this context.

Related JEE Main Chemistry questions

• Why is the chlorine atom in vinyl chloride comparatively less reactive?
• What is the product obtained when neopentyl bromide undergoes the Wurtz reaction?
• Which of the following reactions is most likely to produce a hydrocarbon in high yield with ease?
• Which of the following reactions proceeds by an S_N2 mechanism?
• Identify the incorrect statement among the following:
• An alkyl chloride A with molecular formula C4H9Cl is treated with sodium in dry ether. The hydrocarbon formed in this reaction yields only one monochloro product on chlorination. Identify A.

⚔️ Practice JEE Main Chemistry free + battle 1v1 →