Given below are two statements : Statement I : Methane can be prepared by decarboxylation of sodium ethanoate, Kolbe's electrolysis of sodium acetate and reaction of $\mathrm{CH}_3 \mathrm{MgBr}$ with water. Statement II : Methane cannot be prepared from unsaturated hydrocarbons and by Wurtz reaction. In the light of the above statements, choose the correct answer from the options given below

Statement I is false but Statement II is true

Both Statement I and Statement II are true

Both Statement I and Statement II are false

Statement I is true but Statement II is false

Given below are two statements : Statement I : One mole of propyne reacts with excess of sodium to liberate half a mole of $\mathrm{H}_2$ gas. Statement II : Four g of propyne react with $\mathrm{NaNH}_2$ to liberate $\mathrm{NH}_3$ gas which occupies 224 mL at STP. In the light of the above statements, choose the most appropriate answer from the options given below :

Statement I is correct but Statement II is incorrect

Both Statement I and Statement II are incorrect

Statement I is incorrect but Statement II is correct

Both Statement I and Statement II are correct

Given below are two statements : Statement (I) : $$\mathrm{S}_{\mathrm{N}} 2$$ reactions are 'stereospecific, indicating that they result in the formation of only one stereoisomer as the product. Statement (II) : $$\mathrm{S}_{\mathrm{N}} 1$$ reactions generally result in formation of product as racemic mixtures. In the light of the above statements, choose the correct answer from the options given below :

Both Statement I and Statement II are true

Both Statement I and Statement II are false

Statement I is false but Statement II is true

Statement I is true but Statement II is false

Hydrocarbons — JEE Main Previous Year Questions

153 solved PYQs · 2016–2026 · Chemistry

Solved PYQs: 153
Years covered: 2016–2026
Avg / year: ~14
Subject: Chemistry

How many JEE Main questions come from Hydrocarbons?

Hydrocarbons has contributed 153 questions to Joint Entrance Examination (Main) papers between 2016 and 2026 — an average of about 14 questions a year. That count is measured from EByAi’s bank of 55,289 JEE Main questions, not estimated from a syllabus. Every one of the 153 questions carries a written, step-by-step solution, and each is tagged to Hydrocarbons within Chemistry, so you can drill this chapter across every year at once instead of hunting through paper PDFs. Practising a chapter’s full PYQ history is the fastest way to learn the patterns examiners reuse.

Sample Hydrocarbons questions from real JEE Main papers

These are 5 real questions from the bank — exactly as asked, with the answer one tap away. All 153 Hydrocarbons questions (with full written solutions) are available in practice.

Question 1 · JEE Main 2016
5 L of an alkane requires 25 L of oxygen for its complete combustion. If all volumes are measured at constant temperature and pressure, the alkane is :
1. (A) $Ethane$
2. (B) $Propane$
3. (C) $Butane$
4. (D) $Isobutane$
Show answerAnswer
$Answer: (B) Propane$
Question 2 · JEE Main 2016
At 300 K and 1 atm, 15 mL of a gaseous hydrocarbon requires 375 mL air containing 20% O 2 by volume for complete combustion. After combustion the gases occupy 345 mL. Assuming that the water formed is in liquid form and the volumes were measured at the same temperature and pressure, the formula of the hydrocarbon is:
1. (A) $C 3 H 8$
2. (B) $C 4 H 8$
3. (C) $C 4 H 10$
4. (D) $C 3 H 6$
Show answerAnswer
$Answer: (A) C 3 H 8$
Question 3 · JEE Main 2026
Given below are two statements : Statement I : Methane can be prepared by decarboxylation of sodium ethanoate, Kolbe's electrolysis of sodium acetate and reaction of $CH_{3} MgBr$ with water. Statement II : Methane cannot be prepared from unsaturated hydrocarbons and by Wurtz reaction. In the light of the above statements, choose the correct answer from the options given below
1. (A) $Both Statement I and Statement II are true$
2. (B) $Both Statement I and Statement II are false$
3. (C) $Statement I is true but Statement II is false$
4. (D) $Statement I is false but Statement II is true$
Show answerAnswer
$Answer: (D) Statement I is false but Statement II is true$
Question 4 · JEE Main 2025
Given below are two statements : Statement I : One mole of propyne reacts with excess of sodium to liberate half a mole of $H_{2}$ gas. Statement II : Four g of propyne react with $NaNH_{2}$ to liberate $NH_{3}$ gas which occupies 224 mL at STP. In the light of the above statements, choose the most appropriate answer from the options given below :
1. (A) $Both Statement I and Statement II are incorrect$
2. (B) $Statement I is incorrect but Statement II is correct$
3. (C) $Both Statement I and Statement II are correct$
4. (D) $Statement I is correct but Statement II is incorrect$
Show answerAnswer
$Answer: (D) Statement I is correct but Statement II is incorrect$
Question 5 · JEE Main 2024
Given below are two statements : Statement (I) : $S_{N} 2$ reactions are 'stereospecific, indicating that they result in the formation of only one stereoisomer as the product. Statement (II) : $S_{N} 1$ reactions generally result in formation of product as racemic mixtures. In the light of the above statements, choose the correct answer from the options given below :
1. (A) $Both Statement I and Statement II are false$
2. (B) $Statement I is false but Statement II is true$
3. (C) $Statement I is true but Statement II is false$
4. (D) $Both Statement I and Statement II are true$
Show answerAnswer
$Answer: (D) Both Statement I and Statement II are true$

Hydrocarbons questions by year

Year	Questions	Share of chapter questions
2026	20
2025	18
2024	20
2023	21
2022	11
2021	23
2020	13
2019	17
2018	5
2017	1
2016	4

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FAQs

How many JEE Main questions have been asked from Hydrocarbons?

EByAi's bank holds 153 real JEE Main questions from Hydrocarbons, asked between 2016 and 2026 — about 14 per year on average. Every count is measured from actual papers, not estimated.

Is Hydrocarbons important for JEE Main?

153 questions over 11 papers make Hydrocarbons a moderate-weightage chapter in JEE Main Chemistry. The year-wise table above shows exactly how often it appears.

Can I solve Hydrocarbons PYQs online for free?

Yes. EByAi lets you solve JEE Main past-year questions in the browser with written solutions — free daily practice, no card needed.

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