NEET UG 2018 · Chemistry · Question 79
NEET 2018 Chemistry, question 79
Question 79 of the NEET 2018 paper (code AA) is a Chemistry question from Chemical Kinetics. Its idea, General Half-Life Formula, was asked twice, both in 2018, across NEET 2017–2026. The CBSE official answer key gives option 2.
Updated 2026-10-08
Q79 · Chemistry
The correct difference between first- and second-order reactions is that
- 1a first-order reaction can be catalyzed; a second-order reaction cannot be catalyzed
- 2the half-life of a first-order reaction does not depend on ; the half-life of a second-order reaction does depend on Official answer
- 3the rate of a first-order reaction does not depend on reactant concentrations; the rate of a second-order reaction does depend on reactant concentrations
- 4the rate of a first-order reaction does depend on reactant concentrations; the rate of a second-order reaction does not depend on reactant concentrations
Official answer: option 2 · CBSE official answer key
Same idea
General Half-Life Formula, in other papers
NEET asked this idea twice, both in 2018. The other question below.
- 2018 Q84When initial concentration of the reactant is doubled, the half-life period of a zero order reactionOne-line MCQ · Easy
General Half-Life Formula: 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.