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Friday, 9 October

JEE Main Chemistry · Some Basic Concepts of Chemistry

Limiting Reagent Identification

Limiting Reagent Identification (Some Basic Concepts of Chemistry) was asked 5 times in 5 JEE Main shifts, 2021–2026, out of the 42 shifts Lumi analysed. 2 of the 5 had a numerical answer.

Times asked
5
in 5 shifts
Years
2021–2026
Usual format
Single correct
Calculation
Pattern
Frequent
repeats across shifts

How it is asked

  • Product mass with limiting reagent
  • Gas volume from impure reagent

Difficulty

Easy 2Medium 3Hard 0

Where it sits

Chapter: Some Basic Concepts of Chemistry. Topic: Stoichiometry, 38 questions over 16 ideas.

Other repeat ideas in this topic

Every time it came

All 5 questions

Newest first, each with its options and official answer.

  1. 5 Apr 2026, Shift 2 · Q51What volume of hydrogen gas at STP would be liberated by action of 50 mL of H2SO4\mathrm{H_2SO_4} of 50% purity (density = 1.3 g mL−1^{-1})…MediumSingle correct
  2. 2 Apr 2025, Shift 1 · Q51CaCO3(s)+2HCl(aq)→CaCl2(aq)+CO2(g)+H2O(l)\mathrm{CaCO_3(s)+2HCl(aq)\rightarrow CaCl_2(aq)+CO_2(g)+H_2O(l)} Consider the above reaction, what mass of CaCl2\mathrm{CaCl_2} will be…MediumSingle correct
  3. 7 Apr 2025, Shift 2 · Q71Butane reacts with oxygen to produce carbon dioxide and water following the equation given below.…EasyNumerical value
  4. 29 Jun 2022, Shift 1 · Q61Production of iron in blast furnace follows the following equation Fe3O4(s)+4CO(g)→3Fe(l)+4CO2(g)\mathrm{Fe_3O_4(s) + 4CO(g) \rightarrow 3Fe(l) + 4CO_2(g)} when 4.640…EasySingle correct
  5. 16 Mar 2021, Shift 2 · Q51When 35 mL of 0.15 M lead nitrate solution is mixed with 20 mL of 0.12 M chromic sulphate solution, ________ ×10−5\times10^{-5} moles of lead…MediumNumerical value