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Saturday, 10 October

JEE Main Chemistry · Chemical Kinetics

First-Order Kinetics

First-Order Kinetics (Chemical Kinetics) was asked 2 times in 2 JEE Main shifts, 2022–2024, out of the 42 shifts Lumi analysed. 2 of the 2 had a numerical answer.

Times asked
2
in 2 shifts
Years
2022–2024
Usual format
Numerical value
Calculation
Pattern
Occasional
repeats across shifts

How it is asked

  • Time for fractional completion first order
  • Concentration ratio after time first order

Difficulty

Easy 1Medium 1Hard 0

Where it sits

Chapter: Chemical Kinetics. Topic: Rate Laws, 9 questions over 7 ideas.

Other repeat ideas in this topic

Every time it came

All 2 questions

Newest first, each with its options and official answer.

  1. 6 Apr 2024, Shift 2 · Q85Consider the two different first order reactions given below A+B→CA + B \rightarrow C (Reaction 1) P→QP \rightarrow Q (Reaction 2) The ratio…MediumNumerical value
  2. 28 Jul 2022, Shift 1 · Q86For the given first order reaction A→B\mathrm{A\to B} the half life of the reaction is 0.3010 min. The ratio of the initial concentration…EasyNumerical value