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Saturday, 31 October

JEE Main · Chemistry · Chemical Kinetics

Rate and Stoichiometry

JEE Main asked Rate and Stoichiometry 7 times in 7 of the 108 shifts Lumi analysed, in 2020, 2021, 2022, 2023 and 2024. It belongs to Rate Laws, in Chemical Kinetics (Chemistry). The longest wait between two years asking it was 1 year. In 2021 and 2024 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
7
in 7 shifts
Years
5 of 8
First asked
2020
last in 2024
Pattern
Asked most years
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2020, 2021, 2022, 2023 and 2024. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.

00.050.10’170.08’200.07’210.03’220.07’230.09’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 1 in 12 shifts · 2021: 2 in 24 shifts · 2022: 1 in 24 shifts · 2023: 1 in 12 shifts · 2024: 2 in 18 shifts · 2025: 0 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
  • 20250 of 8
  • 20242 of 18
  • 20231 of 12
  • 20221 of 24
  • 20212 of 24
  • 20201 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Numerical value is the usual form. Skill tested: calculation.

  • Rate of formation from concentration change
  • Rate of product from reactant data

Difficulty

Easy 4Medium 3Hard 0

5 of the 7 questions had a numerical answer.

Every question

All 7 questions

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

  1. 30 Jan 2024, Shift 2 · Q85NO2\mathrm{NO_2} required for a reaction is produced by decomposition of N2O5\mathrm{N_2O_5} in CCl4\mathrm{CCl_4} as by equation…EasyNumerical value
  2. 5 Apr 2024, Shift 2 · Q85Consider the following single step reaction in gas phase at constant temperature. 2A(g)+B(g)→C(g)\mathrm{2A_{(g)} + B_{(g)} \rightarrow C_{(g)}} The…MediumNumerical value
  3. 11 Apr 2023, Shift 1 · Q87KClO3+6FeSO4+3H2SO4→KCl+3Fe2(SO4)3+3H2O\mathrm{KClO_3 + 6FeSO_4 + 3H_2SO_4 \rightarrow KCl + 3Fe_2(SO_4)_3 + 3H_2O} The above reaction was studied at 300 K by monitoring the…MediumNumerical value
  4. 25 Jun 2022, Shift 1 · Q88For a given chemical reaction γ1A+γ2B→γ3C+γ4D\gamma_1 \mathrm{A} + \gamma_2 \mathrm{B} \rightarrow \gamma_3 \mathrm{C} + \gamma_4 \mathrm{D}…EasyNumerical value
  5. 27 Aug 2021, Shift 1 · Q56The reaction that occurs in a breath analyser, a device used to determine the alcohol level in a person’s blood stream is…EasyNumerical value
  6. 4 Aug 2021, Shift 1 · Q33For a gaseous reaction, A(g)→2B(g)+C(g)\mathrm{A_{(g)} \rightarrow 2B_{(g)} + C_{(g)}}, the rate of decomposition of A(g)\mathrm{A_{(g)}} may be studied…MediumSingle correct
  7. 3 Sep 2020, Shift 2 · Q29For the reaction 2A+3B+32C→3P2\mathrm{A} + 3\mathrm{B} + \frac{3}{2}\mathrm{C} \rightarrow 3\mathrm{P} , which statement is correct ?EasySingle correct

Shifts: 3 Sep 2020, Shift 2, 4 Aug 2021, Shift 1, 27 Aug 2021, Shift 1, 25 Jun 2022, Shift 1, 11 Apr 2023, Shift 1, 30 Jan 2024, Shift 2, 5 Apr 2024, Shift 2.

Same topic

Other ideas in Rate Laws

Rate Laws has 13 ideas JEE Main has asked; 4 of them came up in more than one question.

Topic analysisChapter analysisStudy this chapterAll repeated ideas