NEET UG · Chemistry · Class 12

Haloalkanes and Haloarenes: NEET previous year questions

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

Asked in 10 years: 16; 10 of 10 papers
10-year average: 1.5; a paper · 1.6 since 2024 0.1
Typical range: 1–3; questions a paper; fewest 1, most 3
Weighted estimate: 1.7; model, recent papers count more · about 7 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 Haloalkanes and Haloarenes

Priority

Lower priority

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

Past questions: 16in 10 of 10 papers
Study plan gives it: 13 hover 12 months; 10 h over 6

Study this chapter →Practise →

Ideas asked most often

Allylic and Benzylic Reactivity2×
Preparation of Haloarenes2×

68 of the 80 ideas in Lumi’s map of this chapter have not been asked or touched in ten years. New questions often come from ideas like these, so learn the whole chapter, not just the list above.

Questions per year

Kind of question

SHARE OF 10 YEARS

Application38%
Calculation19%
Recall19%
Concept19%
Assertion–reason6%

Most common asks: predict product of reaction (4); identify end product of reaction sequence (2); count correct statements on elimination reaction (1).

Profile

This chapter in numbers

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

Rank, all NEET chapters: #54; of 80 by weighted estimate
Rank in Chemistry: #16; of 21 chapters
Share of the paper: 0.8%; ten-year average
Busiest year: 2023; 3 questions
Year to year: Steady; varies by about 0.7 questions
Long-run direction: +0.08; questions per paper, per year
Easy questions: 31%; 91% of ideas rated hard
With a figure: 63%; graph, diagram or structure
Study time: 13 h; 10 h on a 6-month plan
Marks per study hour: 0.52; #57 of 80 chapters
Foundation for others: 42%; of its ideas are used in other chapters

Difficulty, year by year

Each question rated easy, medium or hard against NCERT.

20171
20181
20191
20201
20212
20222
20233
20243
20251
20261

Easy
Medium
Hard

What it asks you to do

SHARE OF QUESTIONS

Application38%
Concept25%
Multi-step19%
Recall19%

Coverage

How much of the chapter NEET has used

We split the chapter into 80 ideas. In ten years NEET built a question around 5 of them. Most of the chapter has never been asked, which is why learning it whole beats memorising past questions.

Asked as the main idea: 5
Touched on in a question: 7
Never asked: 68

Topics

What repeats, topic by topic

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

Nucleophilic Substitution · Every year16
1111223311

’17’18’19’20’21’22’23’24’25’26

Topic	2017	’18	2019	’20	2021	’22	2023	’24	2025	’26	Total
Nucleophilic SubstitutionEvery year	1	1	1	1	2	2	3	3	1	1	16

03+questions in that year’s paper

Nucleophilic Substitution
Expect an application item that applies the idea to a fresh situation about Nucleophilic Substitution; a short numerical problem (one or two formula steps, four numeric options) is the next most likely shape. Past framings centre on: predict product of reaction; identify end product of reaction sequence.

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

Open16 · 100%100%10/102233
14 ideas inside
- Repeated2 · 13%13%2/10
- Repeated2 · 13%13%2/10
- 1 · 6%6%1/10
- 1 · 6%6%1/10
- 1 · 6%6%1/10
- 1 · 6%6%1/10
- 1 · 6%6%1/10
- 1 · 6%6%1/10
- 1 · 6%6%1/10
- 1 · 6%6%1/10
- 1 · 6%6%1/10
- 1 · 6%6%1/10
- 1 · 6%6%1/10
- 1 · 6%6%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, 14 different ideas were tested. These came more than once, or are new since 2024.

Allylic and Benzylic Reactivity2×
classify example of a halide type
Preparation of Haloarenes2×
reagent for synthesis of aryl halide
Grignard ReagentsNew1×
predict product of reaction
Leaving Group AbilityNew1×
assertion-reason on leaving group ability
Aqueous vs Alcoholic KOHNew1×
identify end product of reaction sequence
Alcohols to HaloalkanesNew1×
predict product of reaction

Idea	Times	Usually asked as
Allylic and Benzylic Reactivityclassify example of a halide type	2	One-line MCQ
Preparation of Haloarenesreagent for synthesis of aryl halide	2	One-line MCQ
Grignard Reagentspredict product of reaction	1	One-line MCQNew
Leaving Group Abilityassertion-reason on leaving group ability	1	Assertion–reasonNew
Aqueous vs Alcoholic KOHidentify end product of reaction sequence	1	One-line MCQNew
Alcohols to Haloalkanespredict product of reaction	1	One-line MCQNew

Every question

Haloalkanes and Haloarenes questions, year by year

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

NEET 20261 question

Q72One of the products formed in the following reaction is [Cyclohexyl–MgBr + Cyclohexyl– $\mathrm{NH_2}$ $\to$ ]One-line MCQ · figure

NEET 20251 question

Q84Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R). Assertion (A) :…Assertion–reason · figure

NEET 20243 questions

Q58The compound that will undergo S $_N$ 1 reaction with the fastest rate isOne-line MCQ · figure
Q86The products A and B obtained in the following reactions, respectively, are 3ROH + PCl $_3$ $\to$ 3RCl + A ROH + PCl $_5$ $\to$ RCl + HCl + BOne-line MCQ
Q98Major products A and B formed in the following reaction sequence, are [2-methylcyclohexan-1-ol] $\xrightarrow{\mathrm{PBr_3}}$ A (major)…One-line MCQ · figure

NEET 20233 questions

Q53The given compound $\mathrm{C_6H_5{-}CH{=}CH{-}CH(X){-}CH_2CH_3}$ is an example of ________.One-line MCQ · figure
Q80Consider the following reaction and identify the product (P). $\mathrm{CH_3-CH(CH_3)-CH(OH)-CH_3}$ (3-Methylbutan-2-ol)…One-line MCQ · figure
Q94Identify the final product [D] obtained in the following sequence of reactions.…One-line MCQ · figure

NEET 20222 questions

Q58The incorrect statement regarding chirality is :One-line MCQ
Q77Which of the following is suitable to synthesize chlorobenzene ?One-line MCQ · figure

NEET 20212 questions

Q71The correct sequence of bond enthalpy of 'C–X' bond is :One-line MCQ
Q83The major product formed in dehydrohalogenation reaction of 2-Bromo pentane is Pent-2-ene. This product formation is based on ?One-line MCQ

NEET 20201 question

Q114Elimination reaction of 2-Bromo-pentane to form pent-2-ene is : (a) $\beta$ -Elimination reaction (b) Follows Zaitsev rule (c)…Other

NEET 20191 question

Q65Among the following, the reaction that proceeds through an electrophilic substitution, is :One-line MCQ · figure

NEET 20181 question

Q61The compound $\mathrm{C_7H_8}$ undergoes the following reactions :…One-line MCQ

NEET 20171 question

Q80Identify A and predict the type of reaction [m-bromoanisole (benzene ring with $\mathrm{OCH_3}$ and Br meta to it)] $\xrightarrow{NaNH_2}$ AOne-line MCQ · figure

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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