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Chemistry - Redox Reactions

Practise 92 NEET NTA questions on Redox Reactions. Each question shows a quick preview so you can jump straight to the topic you want to revise.

Redox Reactions has been asked in 0 of the 38 years of NEET NTA papers analysed (1988–2025), with 92 questions in all. 100% of them were easy, 0% moderate and 0% tough. Most of its questions came from 2025, with 0 questions that year. In the last three years (2023–2025) it had 0 questions across 6 papers, about 0 per paper.

All of the chapter's questions come from a single topic, Uncategorized.

  1. 1In the balanced chemical equation I O 3 - + a I - + b H + → c H 2 O + d I 2 a, b, c and d are respectively.
  2. 2For the redox reaction M n O 4 - + C 2 O 4 2 - + H + → M n 2 + + C O 2 + H 2 O The correct coefficients of the reactants for the balanced eq
  3. 3In the reaction Bromine 3 Br 2 + 6 OH − → 5 Br − + BrO 3 − + 3 H 2 O
  4. 4In [ C r ( O 2 ) ( N H 3 ) 4 H 2 O ] C l 2 , oxidation number of Cr is +3, then oxygen will be in the form
  5. 5The reaction of aqueous KMn O 4 with H 2 O 2 in acidic conditions gives
  6. 6For the reaction M x + + MnO 4 - ⟶ MO 3 - + Mn 2 + , if 1 mol of MnO 4 - oxidises 1.67 mol of M x + to MO 3 - , then the value of x in the r
  7. 72 moles of F e S O 4 in acid medium are oxidized by x moles of K M n O 4 , whereas 2 moles of F e C 2 O 4 in acid medium are oxidized by y m
  8. 8Evaluate equivalent weight of A s 2 O 3 : A s 2 O 3 + 5 H 2 O → 2 A s O 4 3 - + 10 H + + 4 e −
  9. 92.56 × 10 - 3 equivalent of KOH is required to neutralise 0 .12544 g H 2 XO 4 . The atomic mass of X (in g/mol ) is: [Given: H 2 XO 4 is a d
  10. 10For the redox reaction, x M n O 4 - + y H 2 C 2 O 4 + z H + → m M n 2 + + n C O 2 + p H the value of x, y, m and n are respectively
  11. 11In which of the following, oxidation number of chlorine is + 5 ?
  12. 120.1 M K M n O 4 is used for the following titration. What volume of the solution in ml will be required to react with 0.158 g N a 2 S 2 O 3
  13. 13Average oxidation number of carbon in C 3 O 2 , M g 2 C 3 are respectively
  14. 14The amount of solute (molar mass 60 g m o l - 1 ) that must be added to 180 g of water so that the vapour pressure of water is lowered by 10
  15. 15In a reaction, C r 2 O 7 2 - is reduced to C r 3 + . What will be the concentration of 0.1 M K 2 C r 2 O 7 in equivalent per litre? Cr 2 O 7
  16. 166 mol of a mixture of Mohr's salt and F e 2 ( S O 4 ) 3 requires 500 ml of 1 M of K 2 C r 2 O 7 for complete oxidation in acidic medium. The
  17. 17Oxidation number of iodine in I O 3 - , I O 4 - , K I and I 2 respectively are
  18. 18Average oxidation state of Fe in F e 3 O 4 is
  19. 19In the reaction PCl 3 + Cl 2 ⟶ PCl 5 , which of the following is correct?
  20. 20The rapid change of pH near the stoichiometric point of an acid-base titration is the basis of indicator detection. pH of the solution is re
  21. 21In the reaction, S O 2 + 2 H 2 S → 3 S + 2 H 2 O , which choice has value twice that of equivalent mass of oxidising agent?
  22. 22The oxidation states of Cr in [ C r ( H 2 O ) 6 ] C l 3 , [ C r ( C 6 H 6 ) 2 ] and K 2 [ C r ( C N ) 2 ( O ) 2 ( O 2 ) ( N H 3 ) ] respecti
  23. 23Which of the following changes represent a disproportionation reaction (s)?
  24. 24A K M n O 4 solution can be standardised by titration against A s 2 O 3 ( s ) . A 0.1156 g sample of A s 2 O 3 requires 27.08 mL of the K M
  25. 25The species which undergo disproportionation in alkaline medium is/are
  26. 26Determine the oxidation number of the underlined atom in NH 4 6 Mo 7 ¯ O 2 4
  27. 27In acidic medium, H 2 O 2 changes C r 2 O 7 - 2 to Cr O 5 which has two (–O–O) bonds. Oxidation state of Cr in Cr O 5 is
  28. 28The valency of an element whose atomic weight is 12 and sp. heat 0.25 is
  29. 29The ratio of coefficients of H N O 3 , F e ( N O 3 ) 2 and N H 4 N O 3 in the following redox equation. F e + H N O 3 → F e ( N O 3 ) 2 + N
  30. 30What is the possible product of the reaction in which 1 mole of HNO 3 is reduced by absorption of 4 moles electrons?
  31. 31What mass of N 2 H 4 can be oxidised to N 2 by 24.0 g K 2 C r O 4 , which is reduced to C r ( O H ) 4 - (Given: Molar mass of K 2 CrO 4 = 19
  32. 32Consider the following reactions: (i) C 2 O 4 2 - → C O 2 (ii) S O 4 2 - → S O 3 2 - (iii) M n O 4 2 - → M n O 4 - (iv) F e 3 + → F e 2 + Ch
  33. 33Which does not undergo comproportionation reaction?
  34. 34Volume of 0.1 M K 2 C r 2 O 7 required to oxidize 35 ml of 0.5 M F e S O 4 solution is
  35. 356 × 10 − 3 mole K 2 Cr 2 O 7 reacts completely with 9 × 10 − 3 mole of X n+ to give XO 3 - and Cr 3 + . Value of n will be
  36. 36If I O 4 - is converted into I 2 in acid medium, calculate the equivalent mass of I O 4 - .
  37. 37A 5 molar solution of H 2 S O 4 is diluted from 1 litre to a volume of 10 litres, the normality of the resulting solution will be :
  38. 38The reaction 3 C l O - ( a q ) → C l O 3 - ( a q ) + 2 C l - ( a q ) is an example of
  39. 39In the given below, which ion cannot give iodometric titrations?
  40. 40A mixture of salts was treated to determine the barium content. A 0.230g sample was dissolved and treated with excess potassium chromate. Th
  41. 41In the balanced chemical reaction, I O 3 - + a I - + b H + ⟶ c H 2 O + d I 2 a , b , c and d respectively correspond to -
  42. 42Which one of the following reactions does not involve either oxidation or reduction?
  43. 43In the following change, 3 F e + 4 H 2 O → F e 3 O 4 + 4 H 2 If the atomic weight of iron is 56, then its equivalent weight will be
  44. 44Required amount of crystalline oxalic acid (eq. w t . = 63 ) to prepare N 10 , 250 m l oxalic acid solution is
  45. 45Which of the following combination of reagents does not undergo redox reaction in aqueous medium?
  46. 461 mole of F e S O 4 (atomic weight of Fe is 55 .84 g mol − 1 ) is oxidized to F e 2 ( S O 4 ) 3 . Calculate the equivalent weight of ferrous
  47. 47Oxidation numbers of Mn in its compounds M n C l 2 , M n ( O H ) 3 . M n O 2 and K M n O 4 respectively are
  48. 48Consider the following reaction : x MnO 4 - + y C 2 O 4 2 - + z H + ⟶ x Mn 2 + + 2 y CO 2 + z 2 H 2 O The values of x, y and z in the reacti
  49. 492 C u I → C u + C u I 2 , the given reaction is an example of
  50. 50What will happen when a block of copper metal is dropped into a beaker containing a solution of 1 M Z n S O 4 ?

Frequently Asked Questions

1.How many questions are available for Redox Reactions?

This chapter includes 92 NEET NTA questions.

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

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

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

Of the 92 questions analysed for this chapter, 100% are easy, 0% moderate and 0% tough. 2025 had the most, with 0 questions.

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

All of this chapter's questions come from a single topic: Uncategorized.