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Saturday, 31 October

JEE Main · Chemistry · Chemical Kinetics

Reaction Energy Profiles

JEE Main asked Reaction Energy Profiles 4 times in 4 of the 108 shifts Lumi analysed, in 2021, 2023 and 2025. It belongs to Arrhenius Equation, in Chemical Kinetics (Chemistry). The longest wait between two years asking it was 2 years. In 2023 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
4
in 4 shifts
Years
3 of 8
First asked
2021
last in 2025
Pattern
Comes in cycles
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2021, 2023 and 2025. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.

00.10.20’170’200.03’210’220.14’230’240.13’250’26

Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 1 in 24 shifts · 2022: 0 in 24 shifts · 2023: 2 in 12 shifts · 2024: 0 in 18 shifts · 2025: 1 in 8 shifts · 2026: 0 in 9 shifts.

Shift by shift

Each square is one analysed shift, in date order. Open a filled one for that paper.

  • 20260 of 9
  • 20251 of 8
  • 20240 of 18
  • 20232 of 12
  • 20220 of 24
  • 20211 of 24
  • 20200 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Diagram based is the usual form. Skill tested: data or graph.

  • Graph interpretation of reaction energy profile
  • Identify correct reaction profile diagram

Difficulty

Easy 1Medium 3Hard 0

1 of the 4 questions had a numerical answer.

Every question

All 4 questions

From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.

  1. 2 Apr 2025, Shift 2 · Q56Reactant A converts to product D through the given mechanism (with the net evolution of heat) : A→BA \rightarrow B slow; ΔH=+\Delta H = +ve…MediumDiagram basedHas a figure
  2. 8 Apr 2023, Shift 2 · Q63The correct reaction profile diagram for a positive catalyst reaction.EasyDiagram basedHas a figure
  3. 6 Apr 2023, Shift 2 · Q63Consider the following reaction that goes from A to B in three steps as shown below: Choose the correct option Number of intermediates |…MediumDiagram basedHas a figure
  4. 31 Aug 2021, Shift 1 · Q53According to the following figure, the magnitude of the enthalpy change of the reaction A+B→M+N\mathrm{A+B\rightarrow M+N} in kJ mol−1^{-1} is…MediumNumerical valueHas a figure

Shifts: 31 Aug 2021, Shift 1, 6 Apr 2023, Shift 2, 8 Apr 2023, Shift 2, 2 Apr 2025, Shift 2.

Same topic

Other ideas in Arrhenius Equation

Arrhenius Equation has 10 ideas JEE Main has asked; 7 of them came up in more than one question.

Topic analysisChapter analysisStudy this chapterAll repeated ideas