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Hydrocarbons

Previous year questions with solutions · 2000 – 2026

58Questions
32Papers covered
4.44%Weightage 2026same as last year
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’26
Year-wise statistics questions · papers · average per paper · weightage
YearQuestionsPapersAvg / paperWeightage
20264224.44% same as last year
20252124.44% ▲ 11.1% vs last year
20244224.00% ▲ 104% vs last year
20231111.96% ▼ 34% vs last year
2022321.52.97% ▼ 25.7% vs last year
20212124.00% ▼ 10% vs last year
20202124.44% ▼ 33.3% vs last year
20193136.67% ▲ 200% vs last year
20181112.22% same as last year
20171112.22% ▼ 66.7% vs last year
20166236.67% ▲ 20% vs last year
2015522.55.56% ▲ 150% vs last year
20141112.22% ▼ 34.1% vs last year
2013321.53.37% ▲ 34.8% vs last year
20122212.50% ▲ 100% vs last year
2010120.51.25% ▼ 68.1% vs last year
20092123.92% ▲ 100% vs last year
20081111.96% ▼ 67.3% vs last year
20073136.00% ▲ 200% vs last year
20061112.00% ▼ 50% vs last year
20052124.00% ▼ 4% vs last year
20042124.17% ▲ 2.1% vs last year
20032124.08% ▲ 104.1% vs last year
20021112.00% ▲ 2% vs last year
20011111.96% ▼ 50% vs last year
20002123.92%

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

18 questions · newest paper first

Ques. 1RE-NEET (UG) 2026

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
Ques. 2NEET (UG) 2025

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

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

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

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

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
Ques. 5NEET (UG) 2022

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
Ques. 6NEET (UG) 2021

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

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 7NEET (UG) 2020

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

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 8NEET (UG) 2019

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
Ques. 9NEET 2016 (Phase 2)

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

  1. C3H6
  2. C2H2
  3. C4H10
  4. C2H4
Ques. 10AIPMT 2015

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]
Ques. 11AIPMT 2015 (Cancelled)

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]
Ques. 12AIPMT 2015 (Cancelled)

The reaction of C6H5CH=CHCH3 with HBr produces

  1. C6H5CH2CH2CH2Br
  2. [figure]
  3. C6H5 Br |CHCH2CH3
  4. C6H5CH2 Br |CHCH3
Ques. 13AIPMT 2008

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
Ques. 14AIPMT 2007

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
Ques. 15AIPMT 2005

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

  1. [figure]
  2. [figure]
  3. [figure]
  4. [figure]
Ques. 16AIPMT 2004

Reaction of HBr with propene in the presence of peroxide gives

  1. isopropyl bromide
  2. 3-bromopropane
  3. allyl bromide
  4. n-propyl bromide
Ques. 17AIPMT 2003

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
Ques. 18AIPMT 2001

Which alkene on ozonolysis gives CH3CH2CHO and CH3COCH3?

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