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Chemistry - Redox Reactions

Practise 113 MHTCET previous year questions on Redox Reactions, compiled from papers spanning 2009 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 MHTCET tests.

Redox Reactions has been asked in 13 of the 17 years of MHTCET papers analysed (2007–2026), with 113 questions in all. 64% of them were easy, 34% moderate and 3% tough. Most of its questions came from 2025, with 18 questions that year. In the last three years (2024–2026) it had 50 questions across 59 papers, about 0.8 per paper.

The chapter's 6 topics are not weighted equally: Oxidation number (73 questions, 65%), Oxidation and Reduction Reactions (26 questions, 23%), and Equivalence concept (5 questions, 4%) have been asked the most. Oxidation number has also led over the last five years, with 54 questions. Oxidation number has produced the most tough questions (1).

  1. 1What is the difference in oxidation number of nitrogen when nitric acid is converted into nitrous oxide ?20 Apr, 2026 (M)Oxidation number
  2. 2What is the number of electrons gained by Cl atom when mole of is transformed into mole of ion?20 Apr, 2026 (E)Oxidation number
  3. 3What is the oxidation number of Cl in ?20 Apr, 2026 (E)Oxidation number
  4. 4What is the oxidation state of Xe in ?20 Apr, 2026 (E)Oxidation number
  5. 5Identify change in oxidation state of oxidising agent in following redox reaction.19 Apr, 2026 (M)Oxidation and Reduction Reactions
  6. 6What happens in the oxidation number of Mn during working of dry cell.18 Apr, 2026 (M)Oxidation number
  7. 7What is the oxidation number of carbon in oxalic acid ?18 Apr, 2026 (E)Oxidation number
  8. 8Which of the following reactions is NOT an example of redox reaction?17 Apr, 2026 (M)Oxidation and Reduction Reactions
  9. 9Identify colour change when NaCl solution is titrated against solution using fluorescein indicator.17 Apr, 2026 (E)Redox titration
  10. 10Identify oxidation number of Sulphur respectively in and .17 Apr, 2026 (E)Oxidation number
  11. 11What is the oxidation number of oxygen in ?16 Apr, 2026 (M)Oxidation number
  12. 12Which of the following phenomena represents oxidation?16 Apr, 2026 (E)Oxidation and Reduction Reactions
  13. 13What is oxidation state of chlorine in chlorous acid?16 Apr, 2026 (E)Oxidation number
  14. 14For the following redox reaction, find the correct statement.15 Apr, 2026 (E)Oxidation and Reduction Reactions
  15. 15Which of the following is NOT a redox reaction?13 Apr, 2026 (M)Oxidation and Reduction Reactions
  16. 16What is oxidation state of oxygen in and in respectively?13 Apr, 2026 (E)Oxidation number
  17. 17Find the oxidation number of Cl in11 Apr, 2026 (E)Oxidation number
  18. 18Which of the following compounds exhibits maximum oxidation state of carbon?27 Apr, 2025 (E)Oxidation number
  19. 19In the equation, What is the value of ?26 Apr, 2025 (M)Oxidation number
  20. 20What is the oxidation number of carbon in methanal?26 Apr, 2025 (E)Oxidation number
  21. 21Which of the following species acts as an weakest reducing agent?25 Apr, 2025 (M)Oxidation and Reduction Reactions
  22. 22What is the oxidation number of phosphorus in calcium phosphate?25 Apr, 2025 (M)Oxidation number
  23. 23What is oxidation number of sulphur in ?25 Apr, 2025 (E)Oxidation number
  24. 24Identify correct statement for reaction stated below.23 Apr, 2025 (M)Oxidation number
  25. 25For a reaction, . Which from following phenomena is true regarding nitrogen?23 Apr, 2025 (E)Oxidation and Reduction Reactions
  26. 26What is the difference in oxidation number of Mn in and ?22 Apr, 2025 (M)Oxidation number
  27. 27A compound of Xe and F is found to have atomic ratio as , Find the oxidation number of Xe ?22 Apr, 2025 (E)Oxidation number
  28. 28Which of the following species acts as strongest oxidising agent?22 Apr, 2025 (E)Oxidation and Reduction Reactions
  29. 29Which is NOT correct regarding stock notation?21 Apr, 2025 (M)Oxidation number
  30. 30Identify correct statement for the reaction.21 Apr, 2025 (E)Oxidation and Reduction Reactions
  31. 31What is the number of electrons transferred considering Mn when is converted into ?21 Apr, 2025 (E)Oxidation number
  32. 32Which metal in following compounds is not present in fractional oxidation state?20 Apr, 2025 (M)Oxidation number
  33. 33A compound contains atoms of and z elements. Oxidation numbers of and are and -2 respectively. Identify the possible formula of this compoun20 Apr, 2025 (E)Oxidation number
  34. 34What are the respective oxidation states of sulphur atoms numbered 1 to 4 in tetrathionate ion shown below?19 Apr, 2025 (M)Oxidation number
  35. 35Which of the following is a redox reaction?19 Apr, 2025 (E)Oxidation number
  36. 36What is the oxidation state of phosphorus in phosphate ion?16 May, 2024 (M)Oxidation number
  37. 37What is change in oxidation number of nitrogen when is converted to ion?15 May, 2024 (E)Oxidation number
  38. 38What is oxidation number of S in ?11 May, 2024 (M)Oxidation number
  39. 39Which of the following element in +1 oxidation state has largest ionic radius?11 May, 2024 (E)Oxidation number
  40. 40What is the oxidation number of carbon in ?10 May, 2024 (M)Oxidation number
  41. 41What is the oxidation state of iodine in ?10 May, 2024 (M)Oxidation number
  42. 42What is the change in oxidation number of in following reaction? [Note: The question has been modified to get the correct answer.]10 May, 2024 (E)Oxidation number
  43. 43What is the value of and in order to balance following redox reaction?09 May, 2024 (M)Balancing of redox reactions
  44. 44Which of the following changes involves transfer of 5 electrons?09 May, 2024 (E)Oxidation and Reduction Reactions
  45. 45What is the oxidation state of central metal ion in complex?09 May, 2024 (E)Oxidation number
  46. 46What is the highest oxidation state of third row transition elements?09 May, 2024 (E)Oxidation number
  47. 47Which compound from following contains iodine with highest oxidation number ?04 May, 2024 (M)Oxidation number
  48. 48What is the oxidation state of S in ?04 May, 2024 (E)Oxidation number
  49. 49Identify the element reduced in following reaction.03 May, 2024 (M)Oxidation number
  50. 50In which of the following compounds chlorine has highest oxidation state?03 May, 2024 (E)Oxidation number

Frequently Asked Questions

1.How many questions are available for Redox Reactions?

This chapter includes 113 questions compiled from MHTCET papers spanning 2009 to 2026.

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

These are MHTCET questions specifically for the Redox Reactions chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.

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

Redox Reactions has appeared in 13 of the 17 years of MHTCET papers covered here, with 113 questions across 90 papers - about one per paper it appears in.

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

Of the 113 questions analysed for this chapter, 64% are easy, 34% moderate and 3% tough. 2025 had the most, with 18 questions.

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

These topics have carried the most weightage in Redox Reactions:

  • Oxidation number - 73 questions (65%)
  • Oxidation and Reduction Reactions - 26 questions (23%)
  • Equivalence concept - 5 questions (4%)
  • Oxidation number has produced the most tough questions (1).
6.Is Redox Reactions's weightage in MHTCET going up or down?

Across all 90 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 0.8 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.