Haloalkanes and Haloarenes is a Class 12 Chemistry chapter that carries about 4.2% of the Chemistry questions in NEET. Practise it with 45 questions covering 2 topics, each with an explanation.
Sets of 15 questions that adapt to your level, with an explanation for every answer.
Across the 13 previous year papers, Haloalkanes and Haloarenes had 16 questions, about 1.2 a year. The most in one paper was 3, in NEET 2023.
| Paper | Questions from this chapter |
|---|---|
| NEET 2026 | 0 |
| NEET 2025 | 1 |
| NEET 2024 | 3 |
| NEET 2023 | 3 |
| NEET 2022 | 2 |
| NEET 2021 | 1 |
| NEET 2020 | 1 |
| NEET 2019 | 0 |
| NEET 2018 | 0 |
| NEET 2017 | 1 |
| NEET 2016 | 1 |
| Re-AIPMT 2015 | 2 |
| AIPMT 2014 | 1 |
8 questions from the practice bank, spread across the chapter's topics. The full set is in the app.
Allylic bromination of an alkene is carried out using:
Answer: C. N-bromosuccinimide (NBS)
Why: NBS supplies a low concentration of bromine for substitution at the allylic position.
A haloalkane that undergoes SN1 reaction at a chiral carbon gives mainly:
Answer: C. a racemic mixture
Why: The planar carbocation can be attacked from either face by the nucleophile, so both enantiomers form in equal amounts.
Chlorobenzene is less reactive than chloroethane towards nucleophilic substitution because:
Answer: A. the C–Cl bond has partial double bond character due to resonance, and carbon is sp² hybridised
Why: The lone pair on chlorine delocalises into the ring, which strengthens and shortens the C–Cl bond.
The order of reactivity of alkyl halides in an SN2 reaction is:
Answer: C. methyl > primary > secondary > tertiary
Why: Steric hindrance increases with substitution at the carbon.
A Grignard reagent is prepared by reacting an alkyl halide with magnesium in:
Answer: A. dry ether
Why: Moisture destroys it: RMgX + H₂O → RH + Mg(OH)X.
Chloroform was once used as an anaesthetic, but its use was stopped because:
Answer: B. it is slowly oxidised by air and light to poisonous phosgene
Why: It is stored in dark bottles filled to the brim.
Iodoform (CHI₃) is used as:
Answer: C. an antiseptic
Why: It slowly releases iodine.
The order of reactivity of alkyl halides in an SN1 reaction is:
Answer: D. tertiary > secondary > primary
Why: The rate depends on the stability of the carbocation formed.
Haloalkanes and Haloarenes carries about 4.2% of the Chemistry questions in NEET. Across the 13 previous year papers on NeetVictory it appeared 16 times, about 1.2 questions a year.
Haloalkanes and Haloarenes is a Class 12 Chemistry chapter in the NCERT syllabus.
NeetVictory has 45 practice questions on Haloalkanes and Haloarenes, each with an explanation, in sets of 15 that adapt to your level. This page shows a free sample.
NeetVictory