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Hydrocarbons

Previous year questions with solutions · 2000 – 2026

58Questions
32Papers covered
4.44% →0%Weightage in 2026
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’01
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’26
Year-wise statistics questions · papers · average per paper · weightage
YearQuestionsPapersAvg / paperWeightage
20264224.44% →0%
20252124.44% ↑12.2%
20244223.96% ↑102%
20231111.96% ↓34%
2022321.52.97% ↓25.7%
20212124.00% ↓10%
20202124.44% ↓33.3%
20193136.67% ↑200%
20181112.22% →0%
20171112.22% ↓66.7%
20166236.67% ↑20%
2015522.55.56% ↑150%
20141112.22% ↓34.1%
2013321.53.37% ↑34.8%
20122212.50% ↑100%
2010120.51.25% ↓68.1%
20092123.92% ↑100%
20081111.96% ↓67.3%
20073136.00% ↑200%
20061112.00% ↓50%
20052124.00% ↓4%
20042124.17% ↑2.1%
20032124.08% ↑104.1%
20021112.00% ↑2%
20011111.96% ↓50%
20002123.92%

⚠ 1 of these questions are out of the current syllabus (marked on the question).

18 questions · newest paper first

1

Given below are two statements : In the light of the above statements, choose the most appropriate answer from the options given below.

  1. Statement I is incorrect but Statement II is correct
  2. Both Statement I and Statement II are correct
  3. Both Statement I and Statement II are incorrect
  4. Statement I is correct but Statement II is incorrect
RE-NEET (UG) 2026
2

Which one of the following compounds does not decolourize bromine water?

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
NEET (UG) 2025
3

For the given reaction: [figure] 'P' is

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
NEET (UG) 2024
4

Baeyer's reagent is :

  1. Acidic potassium permanganate solution
  2. Acidic potassium dichromate solution
  3. Cold, dilute, aqueous solution of potassium permanganate
  4. Hot, concentrated solution of potassium permanganate
RE-NEET (UG) 2024
5

Compound X on reaction with O3 followed by Zn/H2O gives formaldehyde and 2-methyl propanal as products. The compound X is

  1. 3-Methylbut-1-ene
  2. 2-Methylbut-1-ene
  3. 2-Methylbut-2-ene
  4. Pent-2-ene
NEET (UG) 2022
6

The major product of the following chemical reaction is : [figure]

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
NEET (UG) 2021
7

An alkene on ozonolysis gives methanal as one of the products, Its structure is :

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
NEET (UG) 2020
8

An alkene “A” on reaction with O3 and Zn + H2O gives propanone and ethanal in equimolar ratio. Addition of HCl to alkene “A” gives “B” as the major product. The structure of product “B” is :

  1. H3C-CH2- Cl | CH3 |C-CH3
  2. H3C- Cl |CH- CH3 | CH3 |CH
  3. Cl-CH2-CH2- CH3 | CH3 |CH
  4. H3C-CH2- CH2Cl |CH-CH3
NEET (UG) 2019
9

The compound that will react most readily with gaseous bromine has the formula

  1. C3H6
  2. C2H2
  3. C4H10
  4. C2H4
NEET 2016 (Phase 2)
10

In the reaction with HCl, an alkene reacts in accordance with the Markovnikov's rule to give a product 1-chloro-1-methylcyclohexane. The possible alkene is

  1. [figure] (A)
  2. [figure] (B)
  3. (A) and (B)
  4. [figure]
AIPMT 2015
11

A single compound of the structure, [figure] is obtainable from ozonolysis of which of the following cyclic compounds?

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
AIPMT 2015 (Cancelled)
12

The reaction of C6H5CH=CHCH3 with HBr produces

  1. C6H5CH2CH2CH2Br
  2. [figure]
  3. C6H5 Br |CHCH2CH3
  4. C6H5CH2 Br |CHCH3
AIPMT 2015 (Cancelled)
13

H3C- CH3 |CH-CH=CH2 + HBr A A (predominantly) is

  1. CH3- Br |CH- CH3 |CH-CH3
  2. CH3- CH3 |CH- Br |CH-CH3
  3. CH3- CH3 |CH-CH2-CH2Br
  4. CH3- Br | CH3 |C-CH2CH3
AIPMT 2008
14

Which of the compound with molecular formula C5H10 yields acetone on ozonolysis?

  1. 3-Methyl-1-butene
  2. Cyclopentane
  3. 2-Methyl-1-butene
  4. 2-Methyl-2-butene
AIPMT 2007
15

Which one of the following alkenes will react faster with H2 under catalytic hydrogenation conditions ?

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
AIPMT 2005
16

Reaction of HBr with propene in the presence of peroxide gives

  1. isopropyl bromide
  2. 3-bromopropane
  3. allyl bromide
  4. n-propyl bromide
AIPMT 2004
17

The compound CH3- CH3 |C=CH-CH3 on reaction with NaIO4 in the presence of KMnO4 gives

  1. CH3COCH3
  2. CH3COCH3 + CH3COOH
  3. CH3COCH3 + CH3CHO
  4. CH3CHO + CO2
AIPMT 2003
18

Which alkene on ozonolysis gives CH3CH2CHO and CH3COCH3?

  1. [figure]
  2. CH3CH2CH=CHCH2CH3
  3. CH3CH2CH=CHCH3
  4. [figure]
AIPMT 2001