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Friday, 9 October

NEET UG 2022 · Chemistry · Question 85

NEET 2022 Chemistry, question 85

Question 85 of the NEET 2022 paper (code R1) is a Chemistry question from Chemical Kinetics. Its idea, Rate vs Concentration Graphs, was asked only this once in NEET 2017–2026. The NTA final answer key gives option 4.

Updated 2026-10-08

Q85 · Chemistry

The given graph is a representation of kinetics of a reaction.

The y and x axes for zero and first order reactions, respectively are

The figure, described in words

Graph at constant temperature T: y vs x is a horizontal straight line (y independent of x).

  1. 1zero order (y = rate and x = concentration), first order (y = rate and x = t1/2t_{1/2})
  2. 2zero order (y = concentration and x = time), first order (y = t1/2t_{1/2} and x = concentration)
  3. 3zero order (y = concentration and x = time), first order (y = rate constant and x = concentration)
  4. 4zero order (y = rate and x = concentration), first order (y = t1/2t_{1/2} and x = concenration)Official answer

Official answer: option 4 · NTA final answer key

Same idea

The only question on Rate vs Concentration Graphs

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

Rate vs Concentration Graphs: every question and how it was framed

The chapter

Chemical Kinetics in ten years of NEET

21 questions from 2017–2026, asked in 10 of 10 papers, about 2.0 a paper. Chemical Kinetics alone had 21.

Chemical Kinetics: questions per paper

0242’172’182’192’202’212’222’233’242’252’26