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Friday, 9 October

JEE Main Chemistry · Redox Reactions

Redox Reactions in JEE Main

Redox Reactions (Chemistry, Redox Reactions) came 17 times in 14 of the 42 JEE Main shifts Lumi analysed, across 11 distinct ideas. 10 of them came in 2024–26; it was last asked in 2026.

Questions
17
in 14 shifts
Ideas asked
11
4 asked more than once
Numerical answer
7
41% of its questions
Pattern
Asked most years
last asked 2026
Questions each year
0481’170’201’211’224’237’240’253’26

In the shifts Lumi analysed for each year.

Difficulty and format
Easy 4Medium 13Hard 0

Format

  • Numerical value7 Q
  • Single correct6 Q
  • Two statements2 Q
  • Match the list1 Q
  • Other1 Q
Ideas inside the topic
11 ideas
Where it sits

Part of Redox Reactions, which had 16 questions in all. Redox Reactions accounts for 106% of them. In Lumi's JEE taxonomy it belongs to Physical Chemistry.

Some questions sit in other chapters too: Chemical Bonding and Molecular Structure, Some Basic Concepts of Chemistry, The p-Block Elements.

Every question

All 17 Redox Reactions questions

Newest first, each with its options and official answer.

  1. 2 Apr 2026, Shift 1 · Q61Which of the following sets includes all the species that will change the orange colour of K2Cr2O7\mathrm{K_2Cr_2O_7} in acidic medium ?MediumSingle correct
  2. 4 Apr 2026, Shift 1 · Q56In order to oxidise a mixture of 11 mole each of FeC2O4\mathrm{FeC_2O_4}, Fe2(C2O4)3\mathrm{Fe_2(C_2O_4)_3}, FeSO4\mathrm{FeSO_4} and…MediumSingle correct
  3. 6 Apr 2026, Shift 2 · Q73500 mL of 0.2 M MnO4−\mathrm{MnO_4^-} solution in basic medium when mixed with 500 mL of 1.5 M KI solution, oxidises iodide ions to liberate…MediumNumerical value
  4. 6 Apr 2024, Shift 2 · Q64Match List - I with List - II. List - I (Reaction) (A) N2(g)+O2(g)→2NO(g)\mathrm{N_{2(g)}+O_{2(g)}\rightarrow 2NO_{(g)}} (B)…EasyMatch the list
  5. 8 Apr 2024, Shift 1 · Q64Thiosulphate reacts differently with iodine and bromine in the reactions given below:…MediumSingle correct
  6. 9 Apr 2024, Shift 1 · Q65Given below are two statements : Statement (I) : The oxidation state of an element in a particular compound is the charge acquired by its…MediumTwo statements
  7. 29 Jan 2024, Shift 1 · Q63Chlorine undergoes disproportionation in alkaline medium as shown below :…EasySingle correct
  8. 30 Jan 2024, Shift 2 · Q84Total number of species from the following which can undergo disproportionation reaction is ________.…MediumNumerical value
  9. 31 Jan 2024, Shift 2 · Q65Given below are two statements : Statement I : S8\mathrm{S_8} solid undergoes disproportionation reaction under alkaline conditions to…MediumTwo statements
  10. 31 Jan 2024, Shift 2 · Q86Number of moles of H+\mathrm{H^+} ions required by 1 mole of MnO4−\mathrm{MnO_4^-} to oxidise oxalate ion to CO2\mathrm{CO_2} is ________.MediumNumerical value
  11. 6 Apr 2023, Shift 1 · Q65Which of the following options are correct for the reaction…MediumOther
  12. 6 Apr 2023, Shift 1 · Q90In ammonium – phosphomolybdate, the oxidation state of Mo is + ________MediumNumerical value
  13. 13 Apr 2023, Shift 2 · Q64The covalency and oxidation state respectively of boron in [BF4]−[\mathrm{BF_4}]^{-}, areMediumSingle correct
  14. 13 Apr 2023, Shift 2 · Q88See the following chemical reaction:…EasyNumerical value
  15. 24 Jun 2022, Shift 1 · Q86The difference in oxidation state of chromium in chromate and dichromate salts is ______.EasyNumerical value
  16. 25 Jul 2021, Shift 1 · Q51When 10 mL of an aqueous solution of Fe2+\mathrm{Fe^{2+}} ions was titrated in the presence of dil H2SO4\mathrm{H_2SO_4} using diphenylamine…MediumNumerical value
  17. 2 Apr 2017 (offline) · Q43Which of the following reactions is an example of a redox reaction ?MediumSingle correct