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Friday, 9 October

NEET UG 2023 · Chemistry · Question 80

NEET 2023 Chemistry, question 80

Question 80 of the NEET 2023 paper (code G6) is a Chemistry question from Haloalkanes and Haloarenes. Its idea, Carbocation Rearrangements, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 2.

Updated 2026-10-08

Q80 · Chemistry

Consider the following reaction and identify the product (P).

CH3−CH(CH3)−CH(OH)−CH3\mathrm{CH_3-CH(CH_3)-CH(OH)-CH_3} (3-Methylbutan-2-ol) →HBr\xrightarrow{\text{HBr}} Product (P)

Printed as a drawing

Stem and options: drawn structural formula of 3-methylbutan-2-ol (CH3-CH-CH-CH3 with CH3 and OH below) + HBr, and options as drawn condensed structural formulas (borderline: typed-style formulas with vertical substituents).

  1. 1CH3−C(CH3)2−CH2Br\mathrm{CH_3-C(CH_3)_2-CH_2Br}
  2. 2CH3−CBr(CH3)−CH2−CH3\mathrm{CH_3-CBr(CH_3)-CH_2-CH_3}Official answer
  3. 3CH3CH=CH−CH3\mathrm{CH_3CH=CH-CH_3}
  4. 4CH3−CH(CH3)−CHBr−CH3\mathrm{CH_3-CH(CH_3)-CHBr-CH_3}

Official answer: option 2 · NTA final answer key

Same idea

The only question on Carbocation Rearrangements

No other NEET paper from 2017–2026 tested this exact idea.

Carbocation Rearrangements: every question and how it was framed

The chapter

Haloalkanes and Haloarenes in ten years of NEET

16 questions from 2017–2026, asked in 10 of 10 papers, about 1.5 a paper. Nucleophilic Substitution alone had 16.

Chapter analysisStudy this chapterPractise this chapter

Haloalkanes and Haloarenes: questions per paper

0241’171’181’191’202’212’223’233’241’251’26