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Chemistry - Redox Reactions

Practise 31 NEET previous year questions on Redox Reactions, compiled from papers spanning 2004 to 2026. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty NEET tests.

Redox Reactions has been asked in 19 of the 39 years of NEET papers analysed (1988–2026), with 31 questions in all. 39% of them were easy, 45% moderate and 16% tough. Most of its questions came from 2009, with 5 questions that year. In the last three years (2024–2026) it had 5 questions across 13 papers, about 0.4 per paper.

The chapter's 5 topics are not weighted equally: Oxidation number (13 questions, 42%), Oxidation and Reduction Reactions (9 questions, 29%), and Redox titration (5 questions, 16%) have been asked the most. Over the last five years the most frequent topics have been Oxidation and Reduction Reactions (4), Oxidation number (2), and Redox titration (1). Redox titration has produced the most tough questions (3).

  1. 1In an acidic medium, mL of M oxalic acid is titrated with KMnO solution. If the volume of KMnO solution required to reach end point is mL, t2026 (Re-NEET)Redox titration
  2. 2The correct decreasing order of oxidation state of the underlined atom in each molecule is2026 (Re-NEET)Oxidation number
  3. 3The oxidation states of the underlined elements in them are, respectively,2025Oxidation number
  4. 4Which reaction is NOT a redox reaction?2024Balancing of redox reactions
  5. 5Match List I with List II. Choose the correct answer from the options given below:2024Oxidation and Reduction Reactions
  6. 6On balancing the given redox reaction a Cr 2 O 7 2 - + bSO 3 2 - aq + cH + aq 2 aCr 3 + aq + bSO 4 2 - aq + c 2 H 2 O l The coefficients a ,2023 (All India)Oxidation and Reduction Reactions
  7. 7The correct option for a redox couple is2023 (Manipur)Oxidation and Reduction Reactions
  8. 8Which of the following reactions is a decomposition redox reaction?2022 (Phase 2)Oxidation and Reduction Reactions
  9. 9Which of the following reactions is the metal displacement reaction? Choose the right option.2021Oxidation and Reduction Reactions
  10. 10What is the change in oxidation number of carbon in the following reaction? CH 4 g + 4 Cl 2 g CCl 4 + 4 HCl g2020 (Phase 1)Oxidation number
  11. 11The oxidation number of the underlined atom in the following species (Identify the incorrect statement)2020 (Phase 2)Oxidation number
  12. 12Which one of the following reactions does not come under hydrolysis type reaction?2020 (Phase 2)Oxidation and Reduction Reactions
  13. 13Which of the following reactions are disproportionation reaction? a 2 C u + C u 2 + + C u 0 b 3 M n O 4 2 - + 4 H + 2 M n O 4 - + M n O 2 + 2019 (All India)Types of redox reactions
  14. 14The oxidation state of in is2019 (Odisha)Oxidation number
  15. 15For the redox reaction: MnO 4 - + C 2 O 4 2 - + H + Mn 2 + + CO 2 + H 2 O What are the correct coefficients of the reactants for the balance2018Balancing of redox reactions
  16. 16Which of the following processes does not involve oxidation of iron?2015 (Phase 1)Oxidation and Reduction Reactions
  17. 17Assuming complete ionization, same moles of which of the following compounds will require the least amount of acidified K M n O 4 for comple2015 (Phase 2)Redox titration
  18. 18The pair of compounds that can exist together is:2014Oxidation and Reduction Reactions
  19. 19Which is the strongest acid in the following?2013 (All India)Oxidation number
  20. 20In which of the following compounds, nitrogen exhibits highest oxidation state?2012 (Screening)Oxidation number
  21. 21A mixture of potassium chlorate, oxalic acid and sulphuric acid is heated. During the reaction which element undergoes maximum change in the2012 (Screening)Oxidation number
  22. 22A solution contains and ions. This solution was treated with iodine at . for is and for . The favourable redox reaction is2011 (Mains)Balancing of redox reactions
  23. 23Oxidation number of in , of in and that of in are respectively :2009 (Mains)Oxidation number
  24. 24Maximum number of electrons in a subshell or an atom is determined by the following :2009 (Mains)Oxidation number
  25. 25Among the following which is the strongest oxidizing agent ? -2009 (Mains)Oxidation number
  26. 26of hydrogen and of oxygen were filled in a steel vessel and exploded. Amount of water produced in this reaction will be -2009 (Mains)Oxidation number
  27. 27Oxidation numbers of in , of in and that of in are respectively,2009 (Screening)Oxidation number
  28. 28Number of moles of required to oxidize one mole of ferrous oxalate completely in acidic medium will be2008 (Mains)Redox titration
  29. 29The number of moles that will be needed to react with one mole of sulphite ion in acidic solution is:2007Redox titration
  30. 30The number of moles of reduced by one mole of is alkaline medium is:2005Redox titration
  31. 31Which is the best description of the behaviour of bromine in the reaction given below?2004Oxidation and Reduction Reactions

Frequently Asked Questions

1.How many questions are available for Redox Reactions?

This chapter includes 31 questions compiled from NEET papers spanning 2004 to 2026.

2.Are these questions only from NEET, or from other exams too?

These are NEET questions specifically for the Redox Reactions chapter. Questions from other exams like AIIMS or JIPMER are organised separately under their respective exam sections.

3.Is Redox Reactions an important chapter for NEET Chemistry?

Redox Reactions has appeared in 19 of the 25 years of NEET papers covered here, with 31 questions across 24 papers - about one per paper it appears in.

4.What is the difficulty level of Redox Reactions questions in NEET?

Of the 31 questions analysed for this chapter, 39% are easy, 45% moderate and 16% tough. 2009 had the most, with 5 questions.

5.Which topics in Redox Reactions should I focus on?

These topics have carried the most weightage in Redox Reactions:

  • Oxidation number - 13 questions (42%)
  • Oxidation and Reduction Reactions - 9 questions (29%)
  • Redox titration - 5 questions (16%)
  • Redox titration has produced the most tough questions (3).
6.Is Redox Reactions's weightage in NEET going up or down?

Across all 24 papers analysed, Redox Reactions has averaged about 1.3 questions per paper. In the last three years (2024–2026), that average has fallen, at about 0.4 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.