NEET UG 2021 · Chemistry · Question 93
NEET 2021 Chemistry, question 93
Question 93 of the NEET 2021 paper (code O1) is a Chemistry question from Amines. Its idea, Deamination via Diazonium Reduction, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 4.
Updated 2026-10-08
Q93 · Chemistry
The reagent 'R' in the given sequence of chemical reaction is :
2,4,6-Tribromoaniline 2,4,6-Tribromobenzenediazonium chloride () 1,3,5-Tribromobenzene
The figure, described in words
2,4,6-tribromoaniline → (NaNO2, HCl, 0-5°C) 2,4,6-tribromobenzenediazonium chloride → (R) 1,3,5-tribromobenzene, drawn as ring structures.
- 1HI
- 2CuCN/KCN
- 3
- 4Official answer
Official answer: option 4 · NTA final answer key
Same idea
The only question on Deamination via Diazonium Reduction
No other NEET paper from 2017–2026 tested this exact idea.
Deamination via Diazonium Reduction: every question and how it was framed
The chapter
Amines in ten years of NEET
18 questions from 2017–2026, asked in 10 of 10 papers, about 1.7 a paper. Amines and Diazonium Salts alone had 18.