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Saturday, 31 October

JEE Main · Chemistry · Some Basic Concepts of Chemistry

Mass-Mass Stoichiometry

JEE Main asked Mass-Mass Stoichiometry 3 times in 3 of the 108 shifts Lumi analysed, in 2020, 2022 and 2024. It belongs to Stoichiometry, in Some Basic Concepts of Chemistry (Chemistry). The longest wait between two years asking it was 2 years.

Updated 2026-10-24

Times asked
3
in 3 shifts
Years
3 of 8
First asked
2020
last in 2024
Pattern
Comes in cycles
across the analysed shifts

Questions on this idea a shift, by year

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

00.050.10’170.08’200’210.03’220’230.05’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 1 in 12 shifts · 2021: 0 in 24 shifts · 2022: 1 in 24 shifts · 2023: 0 in 12 shifts · 2024: 1 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
  • 20241 of 18
  • 20230 of 12
  • 20221 of 24
  • 20210 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.

  • Mass of reactant from product mass
  • Mass of naclo3 for given o2 volume

Difficulty

Easy 2Medium 1Hard 0

2 of the 3 questions had a numerical answer.

Every question

All 3 questions

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

  1. 27 Jan 2024, Shift 1 · Q81Mass of methane required to produce 22 g of CO2\mathrm{CO_2} after complete combustion is __________ g. (Given Molar mass in…EasyNumerical value
  2. 29 Jul 2022, Shift 2 · Q61Consider the reaction…EasySingle correct
  3. 8 Jan 2020, Shift 2 · Q46NaClO3\mathrm{NaClO_3} is used, even in spacecrafts, to produce O2\mathrm{O_2}. The daily consumption of pure O2\mathrm{O_2} by a person is…MediumNumerical value

Shifts: 8 Jan 2020, Shift 2, 29 Jul 2022, Shift 2, 27 Jan 2024, Shift 1.

Same topic

Other ideas in Stoichiometry

Stoichiometry has 24 ideas JEE Main has asked; 13 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisStudy this chapterAll repeated ideas