Chemistry · JEE

Important Questions: Hydrocarbons for JEE

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The most important Hydrocarbons questions for JEE cover conceptual traps, standard results, and numerical patterns from Classification, isomerism, IUPAC nomenclature, general methods of preparation, properties and reactions, Alkanes: Conformations: Sawhorse and Newman projections (of ethane), mechanism of halogenation of alkanes, Alkenes: Geometrical isomerism, mechanism of electrophilic addition, addition of hydrogen, halogens, water, hydrogen halides (Markownikoff's and peroxide effect), Ozonolysis and polymerization, Alkynes: Acidic character, addition of hydrogen, halogens, water and hydrogen halides, polymerization, and more. Goodmarks provides 90+ high-yield MCQs with full solutions.

Focus on what matters most. These important Hydrocarbons questions cover high-weightage concepts from Classification, isomerism, IUPAC nomenclature, general methods of preparation, properties and reactions, Alkanes: Conformations: Sawhorse and Newman projections (of ethane), mechanism of halogenation of alkanes, Alkenes: Geometrical isomerism, mechanism of electrophilic addition, addition of hydrogen, halogens, water, hydrogen halides (Markownikoff's and peroxide effect), Ozonolysis and polymerization, Alkynes: Acidic character, addition of hydrogen, halogens, water and hydrogen halides, polymerization, and more — the topics JEE repeats every year.

JEE Formula Sheet

6+ important formulas for Hydrocarbons

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Subtopics in Hydrocarbons

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Q1ChemistryUnit 15: Hydrocarbons

Which of the following is used as a substitute of glass?

Q2ChemistryUnit 15: Hydrocarbons

The sequence of reagent which can efficiently bring about the above conversion is (are) ? Consider the following synthesis This question has multiple correct options

Q3ChemistryUnit 15: Hydrocarbons

1,4-dimethylbenzene on heating with anhydrous

A l C l_{3}

and

H C l

produces :

Q4ChemistryUnit 15: Hydrocarbons

Monoclinic sulphur on cooling to 95.6 converts to

Q5ChemistryUnit 15: Hydrocarbons

Neoprene is a polymer made by using acetylene as a raw material. It is used as:

Q6ChemistryUnit 15: Hydrocarbons

Rubber is very soft. Therefore, it is vulcanized and used in tires. Vulcanised rubber resists:

Q7ChemistryUnit 15: Hydrocarbons

Methyl acetylene is also known as:

Q8ChemistryUnit 15: Hydrocarbons

The reagent

\boldsymbol{X}

used for the following reaction is:

\mathbf{R}-\mathbf{C}=\mathbf{C R}^{\prime}+\mathbf{H}_{2} \stackrel{\mathbf{X}}{\longrightarrow} \underset{\mathbf{H}^{\prime}}{\mathbf{C}} \mathbf{C}=\mathbf{C}_{\mathbf{H}}^{\prime \mathbf{R}^{\prime}}

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Frequently asked questions

What makes a Hydrocarbons question "important" for JEE?

Important questions test core concepts that appear frequently across JEE Main and Advanced papers — definitions, standard formulas, and classic problem types.

Which subtopics in Hydrocarbons are high-weightage?

Key areas include Classification, isomerism, IUPAC nomenclature, general methods of preparation, properties and reactions, Alkanes: Conformations: Sawhorse and Newman projections (of ethane), mechanism of halogenation of alkanes, Alkenes: Geometrical isomerism, mechanism of electrophilic addition, addition of hydrogen, halogens, water, hydrogen halides (Markownikoff's and peroxide effect), Ozonolysis and polymerization, Alkynes: Acidic character, addition of hydrogen, halogens, water and hydrogen halides, polymerization, and more. Prioritise these before moving to edge cases.

How many important questions should I revise?

Revise 30–50 important MCQs per unit in the last month before JEE. Focus on questions you got wrong at least once.

Can I practise only important questions on Goodmarks?

Pro users can filter by unit and subtopic to target high-yield areas. Free users can attempt sample questions on this page.