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JEE Main - Hydrocarbons Important Questions (Free PDF Download)

Last updated date: 28th May 2024
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Access Now and Score More: JEE Main - Hydrocarbons Important Questions with Solutions PDF

Vedantu provides a valuable resource for JEE Main 2025 in the form of strategically selected JEE Main Hydrocarbons Important Questions, assembled with care by Vedantu's Master Teachers. They keep themselves informed about the latest trends to ensure the questions align perfectly with the JEE Main exam syllabus. These Hydrocarbons important questions for JEE Main encompass multiple-choice questions (MCQs) and Integer Questions, allowing students to assess their skills at different levels. Supported by comprehensive solutions and explanations, the JEE Main Hydrocarbons Important Questions PDF aids students in understanding the right strategies and methods. The PDF contains Previous Year Questions of Hydrocarbons from JEE Main Exams, providing students with enough problem-solving skills for the upcoming exam. All these resources are free and can be easily accessed in PDF format for direct download from our website.


JEE Main Important Questions


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Chapter-wise Important Questions with PDF

Hydrocarbons in JEE Main covers  the study of organic compounds composed solely of hydrogen and carbon atoms, encompassing various types of hydrocarbons, their nomenclature, isomerism, and reactions. Check out the table below for more information. 

Year wise Weightage of Questions: JEE Main Hydrocarbons

Sl. No.


Average No. Of Questions Asked

Marks per Question

Total Marks





















You can find that an average of 2 to 3 questions have been asked from the past five years of JEE main exam. The teachers worked hard to ensure the Hydrocarbons Important Questions matched the JEE Main syllabus perfectly. So, gear up to succeed – grab your Hydrocarbons Important Questions now and shine in JEE Main 2025!

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Competitive Exams after 12th Science

Focus Areas from Hydrocarbons for JEE Main 2025

In the Hydrocarbons chapter, certain topics can boost your JEE Main 2025 scores. Knowing these topics will make your preparation and focus for the exam easier. You can find the list of significant subjects from below. Therefore, before you get the Hydrocarbons Important Questions for JEE Main, you can review this list of significant topics.

  • Alkanes

  • Alkenes and Alkynes

  • Aromatic Hydrocarbons

  • Reactions of Alkanes, Alkenes, and Alkynes

  • Mechanisms

  • Aromaticity and Aromatic Substitution

  • Isomerism and Stereochemistry

  • Synthetic Applications

  • Natural Sources

Dive into the main ideas, basic theories, and important formulas that shape your success in Hydrocarbons for JEE Main 2025.

Easy Access to JEE Main Physics Important Questions: Chapter-wise Links for 2025

Easily enhance your JEE Main Chemistry preparation for 2025 with our chapter-wise Important Questions. Get the links from the table below:

The Significance of Hydrocarbons Important Questions for JEE Main 2025

Mastering Hydrocarbons in JEE Main is crucial for students who are dedicated to excelling in solving Important Questions. This chapter dives into fundamental concepts such as the structure and classification of hydrocarbons, isomerism, types of reactions, and the behavior of carbon-carbon multiple bonds. These concepts are intriguing and hold significant weightage in the JEE Main examination. Here, we will explore why understanding this chapter is essential to successfully tackling JEE Main Important Questions.

In JEE Main Hydrocarbons are an integral part of various industries, making it essential for young students preparing for the JEE Main exam to understand their significance. Understanding this chapter is essential for JEE Main exam preparation. It also covers the classification, characteristics, reactions, and derivatives of hydrocarbons and also about petroleum refining, environmental impact, and the rise of biofuels.

Here are a few important points that make the chapter significant for JEE Main examination:

I. Understanding Hydrocarbons: An Overview

Hydrocarbons are compounds composed of carbon and hydrogen atoms. They can be classified into four main types: alkanes, alkenes, alkynes, and aromatic hydrocarbons. These compounds exhibit characteristics such as flammability, volatility, and low polarity.

II. Alkanes: The Least Reactive Hydrocarbons

Alkanes are considered the least reactive hydrocarbons due to the presence of only single bonds between carbon atoms. This limited reactivity makes them useful in various applications, such as fuel and lubricants.

III. Ozonolysis of Ethene: A Product of Chemical Transformation

Ozonolysis is a chemical process used to transform ethene. It results in the formation of aldehydes, ketones, and carboxylic acids. Understanding this process is crucial in organic chemistry and the study of hydrocarbon derivatives.

IV. Isomerism and Nomenclature: Unlocking the Diversity of Hydrocarbons

Isomerism plays a vital role in hydrocarbons, allowing for the existence of different structural arrangements. We will explore chain, position, and functional group isomerism. Additionally, we will discuss the importance of systematic naming in accurately identifying hydrocarbons.

V. Reactions of Hydrocarbons: Unveiling their Versatility

A. Combustion Reactions:

Combustion is a significant process that releases energy. We will discuss complete and incomplete combustion, highlighting the formation of carbon monoxide and soot.

B. Addition Reactions:

Alkenes and alkynes undergo addition reactions. We will explain the mechanism behind these reactions, including electrophilic addition and Markovnikov's rule. Examples of common addition reactions and their applications in organic synthesis will be provided.

C. Elimination Reactions:

Alkenes and alkynes also undergo elimination reactions. We will explore the mechanisms behind E1 and E2 reactions, along with their significance in organic chemistry.

D. Substitution Reactions:

Aromatic hydrocarbons undergo substitution reactions, specifically electrophilic aromatic substitution. We will discuss common examples and their applications in pharmaceutical and dye synthesis.

VI. Hydrocarbon Derivatives: Expanding the Possibilities

Hydrocarbon derivatives, such as alcohols, ethers, and halogenated hydrocarbons, offer a wide range of possibilities. We will explore their synthesis, properties, and applications in various industries, including pharmaceuticals and plastics.

VII. Petroleum Refining: Unlocking the Potential of Fossil Fuels

Petroleum refining is a crucial process that extracts useful products from crude oil. We will discuss key processes like cracking, reforming, and polymerization, which play a vital role in meeting global energy demands.

VIII. Environmental Impact and the Rise of Biofuels

The usage of hydrocarbons has significant environmental impacts, including air pollution and greenhouse gas emissions. We will introduce biofuels as a sustainable alternative to fossil fuels, discussing their production, advantages, and challenges.

It's evident that studying the Hydrocarbons chapter before JEE Main 2025 is crucial. You can grasp the concepts effortlessly by downloading the Hydrocarbons Important Questions and conducting a fast review.

Strategic Approach: Maximizing Learning with Formulas and JEE Main Hydrocarbons Important Questions PDF

When you want to learn effectively, you can use a smart strategy by combining formulas and Important Questions. These two things work together nicely. Formulas are like short explanations of important ideas. When solving Hydrocarbons Important Questions for JEE Main, make sure to use the associated formulas. JEE Main Hydrocarbons Important Questions give you a strong base, and formulas help you understand better and solve problems. This mix makes hard things easier and helps you remember better. By using this strategy, you can improve how well you understand and do well in your studies.

Important Equations of Hydrocarbons

1. Alkane General Formula: 

$C_nH_{2n+2}$ where n is the number of carbon atoms.

2. Alkene General Formula:

$C_nH_{2n}$ where n is the number of carbon atoms.

3. Alkyne General Formula:  

$C_nH_{2n-2}$ where n is the number of carbon atoms.

4. Isomer Counting for Alkanes:   

$\text{n-Alkane: } 2^{(n-1)}$

5. Isomer Counting for Alkenes:   

$\text{n-Alkene: } 2^{(n-2)}$

6. Isomer Counting for Alkynes:

$\text{n-Alkyne: } 2^{(n-3)}$

7. Degree of Unsaturation:

$\text{Degree of Unsaturation} = \frac{2C + 2 + N - H}{2}$ Where C is the number of carbon atoms, N is the number of nitrogen atoms, and H is the number of hydrogen atoms.

8. Cycloalkane General Formula:

$C_nH_{2n}$ where n is the number of carbon atoms.

9. Alkene to Alkane Hydrogenation Reaction:

$\text{Alkene} + \text{H}_2 \rightarrow \text{Alkane}$

10. Markovnikov's Rule:

$\text{In an unsymmetrical alkene addition: } \text{Alkene} + \text{Reagent} \rightarrow \text{Product}$

In the addition of an unsymmetrical reagent to an unsymmetrical alkene, the hydrogen atom of the reagent attaches to the carbon atom of the alkene with more hydrogen atoms already bonded, and the other part attaches to the carbon atom with fewer hydrogen atoms.

11. Combustion Reaction for Hydrocarbons:

$\text{Hydrocarbon} + \text{O}_2 \rightarrow \text{CO}_2 + \text{H}_2\text{O}$

DownloadThe JEE Main Chemistry Formulas by Vedantu for FREE. Combine it with JEE Main Important Questions, and you can seeThe good changes in your scores.

Wider Learning: More Links to Enhance JEE Main 2025 Hydrocarbons 

Explore additional resources beyond Hydrocarbons  Important Questions JEE Main 2025. Students need to consider extra materials like practice papers, mock tests, PYQPs, etc., alongside important Hydrocarbons questions to gain a well-rounded preparation, refine their exam strategies, and build confidence for the JEE Main exam.

These additional materials will lift your readiness for JEE Main 2025 Hydrocarbons. These links offer more learning topics than the basics. They're like steps to deeper learning. As you dive into these extra links, you'll uncover more about the chapter. This extra knowledge can help you solve harder problems and face tough questions. These links are like secret tools to make you feel more confident and do great in your exam. Explore the links in the chart below to enhance your JEE Main 2025 Hydrocarbons preparation to a higher level.

Achieve Success through Vedantu’s JEE Main Hydrocarbons Important Questions

As you aim for success in your exams, rely on Vedantu's Hydrocarbons JEE Main Important Questions. We stand out with our special way of teaching that combines expert help and easy-to-use materials. Our detailed JEE Main Hydrocarbons Important Questions make tough ideas easy, making your preparation better. And guess what? You can get these helpful resources as FREE PDFs. Count on Vedantu to support you as you work towards excelling in your exams. Improve your learning, make studying easier, and achieve success with Vedantu.

JEE Mains PYQ Chapterwise: Mastering  Hydrocarbons with Past Papers

Conquering JEE Mains requires unwavering dedication and strategic preparation. One invaluable tool in your arsenal is the treasure trove of previous year question papers (PYQs). But navigating those years of questions can be overwhelming, especially for a crucial chapter like  Hydrocarbons. Enter JEE Mains PYQ Chapterwise: your key to targeted practice and exam mastery in this foundational subject.

By delving into JEE Main Chapter-wise PYQs for  Hydrocarbons, you gain laser-sharp focus on specific topics within this crucial domain. Imagine tackling your weakest areas, with a targeted set of past questions, building confidence and competence one problem at a time.

Whether you prefer the convenience of a JEE Mains Previous Year Questions Chapter Wise for  Hydrocarbons with PDF download or prefer working directly from online resources, the benefits are undeniable. You'll hone your problem-solving skills, learn to apply theoretical knowledge to real-world scenarios involving  Hydrocarbons, and develop the exam temperament needed to excel under pressure, especially when faced with  Hydrocarbons questions. Remember, these questions are like blueprints for future JEE Mains papers – studying them is like peeking into the exam itself!

So, unleash the power of JEE Main PYQ Chapterwise for  Hydrocarbons. Download your chosen resources, pick your weakest topic within this chapter, and start practicing. Each solved question is a step closer to your JEE Mains dream. Remember, consistency is key! Make chapterwise PYQs for  Hydrocarbons a daily ritual, and watch your confidence and competence soar as you approach the exam with a laser-sharp focus and a wealth of knowledge at your fingertips, ready to conquer even the most challenging topics in  Hydrocarbons.

FAQs on JEE Main - Hydrocarbons Important Questions (Free PDF Download)

1. What are the benefits of solving Vedantu’s JEE Main Hydrocarbons Important Questions?

Solving Vedantu’s JEE Main Hydrocarbons Important Questions can help you in many ways, including:

  • Identifying the important topics for the exam

  • Practicing solving problems in the important topics

  • Learning from your mistakes and improving your skills

  • Getting a feel for the format of the exam and the type of questions that are asked

  • Staying motivated and keeping up your momentum in your studies

2. What are the important topics in Hydrocarbons for JEE Main?

The important topics in Hydrocarbons for JEE Main include:

  • Nomenclature of Hydrocarbons

  • Classification of Hydrocarbons

  • Isomerism in Hydrocarbons

  • Physical Properties of Hydrocarbons

  • Chemical Properties of Hydrocarbons

  • Reactions of Hydrocarbons

3. How can I use Vedantu’s JEE Main Hydrocarbons Important Questions effectively?

Here are some tips on how to use Vedantu’s JEE Main Hydrocarbons Important Questions effectively:

  • Start by identifying the important topics for the exam. You can do this by referring to the JEE Main syllabus or by consulting with a teacher or mentor.

  • Find a set of Vedantu’s JEE Main Hydrocarbons Important Questions that cover these topics.

  • Start by solving the easier questions first. This will help you to build your confidence and to get started.

  • As you progress, try to solve more difficult questions. This will help you to challenge yourself and to improve your skills.

  • Don't be afraid to make mistakes. Everyone makes mistakes when they are learning. The important thing is to learn from your mistakes and to keep practicing.

  • Track your progress. Keep track of the questions that you are able to solve correctly. This will help you to see how you are improving over time.

  • Solve questions under timed conditions. This will help you to get used to the time pressure of the exam.

  • Review your solutions. After you have solved a question, take some time to review your solution. This will help you to identify any errors that you made and to learn from them.

  • Seek help when you need it. If you are struggling with a particular question, don't be afraid to ask for help from a teacher, mentor, or friend.

4. What are the different types of questions asked in the JEE Main Hydrocarbons section?

The JEE Main Hydrocarbons section typically includes a variety of question types, including:

  • Multiple choice questions

  • Fill in the blank questions

  • Numerical answer type questions

  • Short answer type questions

  • Long answer type questions

5. What are the scoring patterns for the JEE Main Hydrocarbons chapter?

The scoring pattern for the JEE Main Hydrocarbons section is as follows:

  • Each multiple choice question is worth 1 mark.

  • Each fill in the blank question is worth 1 mark.

  • Each numerical answer type question is worth 2 marks.

  • Each short answer type question is worth 3 marks.

  • Each long answer type question is worth 4 marks.

6. How can I stay motivated while preparing for the JEE Main Hydrocarbons chapter?

Here are some tips on how to stay motivated while preparing for the JEE Main Hydrocarbons section:

  • Set realistic goals and track your progress.

  • Reward yourself for your accomplishments.

  • Find a study partner or group.

  • Take breaks when you need them.

  • Stay positive and believe in yourself.

7. What are the common mistakes that students make in the JEE Main Hydrocarbons Important Questions?

Some of the common mistakes that students make in the JEE Main Hydrocarbons section include:

  • Not studying the important topics thoroughly.

  • Not practicing enough questions.

  • Making careless mistakes.

  • Not managing time effectively.

  • Getting stressed out and giving up.