NEET UG · Chemistry · Class 11

Redox Reactions: NEET previous year questions

10 questions in ten years of NEET, asked in 8 of 10 years. Here is what this chapter tests and how.

Asked in 10 years: 10; 8 of 10 papers
10-year average: 1.0; a paper · 1.3 since 2024 +0.5
Typical range: 0–2; questions a paper; fewest 0, most 2
Weighted estimate: 1.2; model, recent papers count more · about 5 marks

Typical range (fact)
10-year average (fact)
Weighted estimate (model)

Typical range: questions per paper in the middle eight of the ten papers, leaving out the single highest and lowest year (about the 10th to 90th percentile), each paper scaled to 180 questions. The ten-year average and the range are historical fact. The weighted estimate is a model: each paper's share, with recent papers counting more (half-life three years), and dropped syllabus removed. It is a guide to effort, not a forecast.

What to do

How to spend time on Redox Reactions

Priority

Lower priority

Among the chapters that shared the last fifth of the questions. How bands are set

Past questions: 10in 8 of 10 papers
Study plan gives it: 9 hover 12 months; 7 h over 6

Study this chapter →Practise →

Ideas asked most often

Calculating Oxidation Numbers4×
Balancing Redox Equations3×

Questions per year

Kind of question

SHARE OF 10 YEARS

Calculation70%
Application20%
Recall10%

Most common asks: balance redox reaction coefficients (2); order of oxidation states (1); oxidation number change in reaction (1).

Profile

This chapter in numbers

Where it ranks, how steady it is, and what it costs to study.

Rank, all NEET chapters: #72; of 80 by weighted estimate
Rank in Chemistry: #20; of 21 chapters
Share of the paper: 0.5%; ten-year average
Busiest year: 2018; 2 questions
Year to year: Steady; varies by about 0.6 questions
Long-run direction: +0.06; questions per paper, per year
Easy questions: 50%; 53% of ideas rated hard
With a figure: 0%; graph, diagram or structure
Study time: 9 h; 7 h on a 6-month plan
Marks per study hour: 0.53; #50 of 80 chapters
Foundation for others: 50%; of its ideas are used in other chapters

Difficulty, year by year

Each question rated easy, medium or hard against NCERT.

2017
20182
20191
20201
20211
2022
20231
20241
20251
20262

Easy
Medium
Hard

What it asks you to do

SHARE OF QUESTIONS

Calculation60%
Application20%
Multi-step10%
Recall10%

Topics

What repeats, topic by topic

Questions per topic in each year's paper. Topics that come every year are worth learning first.

Redox Reactions · Every year10
21111112

’17’18’19’20’21’22’23’24’25’26

Topic	2017	’18	2019	’20	2021	’22	2023	’24	2025	’26	Total
Redox ReactionsEvery year	·	2	1	1	1	·	1	1	1	2	10

02+questions in that year’s paper

Drill down

Topic, idea, question

Open a topic to see every idea NEET tested inside it, then open an idea to read the questions. Each row shows its ten papers.

topicAskedShareYears’17’18’19’20’21’22’23’24’25’26

Open10 · 100%100%8/1022
5 ideas inside
- Repeated4 · 40%40%4/10
- Repeated3 · 30%30%3/10
- 1 · 10%10%1/10
- 1 · 10%10%1/10
- 1 · 10%10%1/10

Squares are the ten papers, 2017 to 2026; darker means more questions. Share is of the level above.

Ideas

The exact ideas NEET has asked

Inside the topics, 5 different ideas were tested. These came more than once, or are new since 2024.

Calculating Oxidation Numbers4×
order of oxidation states
Balancing Redox Equations3×
balance redox reaction coefficients
Identifying Redox ReactionsNew1×
identify reaction not of a type

Idea	Times	Usually asked as
Calculating Oxidation Numbersorder of oxidation states	4	One-line MCQ
Balancing Redox Equationsbalance redox reaction coefficients	3	One-line MCQ
Identifying Redox Reactionsidentify reaction not of a type	1	One-line MCQNew

Every question

Redox Reactions questions, year by year

The opening words of each question as it appeared in the official paper.

NEET 20262 questions

Q57In an acidic medium, 10 mL of 0.25 M oxalic acid is titrated with $\mathrm{KMnO_4}$ solution. If the volume of $\mathrm{KMnO_4}$ solution…Numerical
Q81The correct decreasing order of oxidation state of the underlined atom in each molecule isOne-line MCQ

NEET 20251 question

Q55Consider the following compounds : $\underline{K}O_2$ , $H_2\underline{O}_2$ and $H_2\underline{S}O_4$ The oxidation states of the…One-line MCQ

NEET 20241 question

Q73Which reaction is NOT a redox reaction?One-line MCQ

NEET 20231 question

Q100On balancing the given redox reaction,…One-line MCQ

NEET 20211 question

Q52Which of the following reactions is the metal displacement reaction ? Choose the right option.One-line MCQ

NEET 20201 question

Q125What is the change in oxidation number of carbon in the following reaction ? $\mathrm{CH_4(g) + 4Cl_2(g) \to CCl_4(l) + 4HCl(g)}$ One-line MCQ

NEET 20191 question

Q50Which of the following reactions are disproportionation reaction ? (a) $2Cu^+ \to Cu^{2+} + Cu^0$ (b)…Other

NEET 20182 questions

Q46The correct order of N-compounds in its decreasing order of oxidation states isOne-line MCQ
Q82For the redox reaction $\mathrm{MnO_4^- + C_2O_4^{2-} + H^+ \longrightarrow Mn^{2+} + CO_2 + H_2O}$ the correct coefficients of the…One-line MCQ

Questions from the official NEET UG papers published by NTA (CBSE before 2019). Topic and idea tags, counts and notes are Lumi’s.

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