NEET UG 2025 · Chemistry · Question 84
NEET 2025 Chemistry, question 84
Question 84 of the NEET 2025 paper (code 45) is a Chemistry question from Haloalkanes and Haloarenes. Its idea, Leaving Group Ability, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 1.
Updated 2026-10-08
Q84 · Chemistry
Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A) : undergoes reaction faster than .
Reason (R) : Iodine is a better leaving group because of its large size.
In the light of the above statements, choose the correct answer from the options given below :
The figure, described in words
Alkyl halides drawn as zig-zag bond-line chains ending in I and Cl (read as 1-iodobutane and 1-chlorobutane).
- 1Both A and R are true and R is the correct explanation of AOfficial answer
- 2Both A and R are true but R is not the correct explanation of A
- 3A is true but R is false
- 4A is false but R is true
Official answer: option 1 · NTA final answer key
Same idea
The only question on Leaving Group Ability
No other NEET paper from 2017–2026 tested this exact idea.
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.