Learn

Friday, 9 October

NEET UG 2024 · Chemistry · Question 98

NEET 2024 Chemistry, question 98

Question 98 of the NEET 2024 paper (code T2) is a Chemistry question from Haloalkanes and Haloarenes. Its idea, Aqueous vs Alcoholic KOH, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 3.

Updated 2026-10-08

Q98 · Chemistry

Major products A and B formed in the following reaction sequence, are

[2-methylcyclohexan-1-ol] →PBr3\xrightarrow{\mathrm{PBr_3}} A (major) →alc. KOH, Δ\xrightarrow{\text{alc. KOH},\ \Delta} B (major)

The figure, described in words

Reactant drawn: 2-methylcyclohexan-1-ol; option structures as described in the options.

  1. 1[structures: A = 2-bromo-6-methylcyclohexan-1-ol; B = 6-methylcyclohex-2-en-1-ol]
  2. 2[structures: A = 2-bromo-6-methylcyclohexan-1-ol; B = 2-methylcyclohexan-1-one]
  3. 3[structures: A = 1-bromo-2-methylcyclohexane; B = 1-methylcyclohexene]Official answer
  4. 4[structures: A = 1-bromo-2-methylcyclohexane; B = methylcyclohexene with the C=C not at the methyl-bearing carbon]

Official answer: option 3 · NTA final answer key

Same idea

The only question on Aqueous vs Alcoholic KOH

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

Aqueous vs Alcoholic KOH: 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.

Haloalkanes and Haloarenes: questions per paper

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