Courses for Kids
Free study material
Offline Centres
Store Icon

JEE Main - Hydrocarbons Notes (Free PDF Download)

Last updated date: 23rd May 2024
Total views: 74.1k
Views today: 0.74k

Access Now and Score More: JEE Main - Hydrocarbons Notes With Important Topics

Prepare to achieve your goals in JEE Main 2024 using Hydrocarbons Notes that concentrate on important topics. These notes hold the secret to securing top scores in JEE Main exams. They are created by master teachers from Vedantu who understand your requirements. These notes present a condensed version of Hydrocarbons and encompass all the necessary information for the test. The best part? You can get it as a FREE PDF download. The teachers put in dedicated efforts to ensure the notes align perfectly with the JEE Main syllabus.


JEE Main Revision Notes


Text, Images, Videos and PDF


JEE Main

Chapter Name:


Academic Session:



English Medium



Available Material:

Chapter-wise Notes with PDF

Hydrocarbons 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 Some Basic Concepts in Chemistry

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 notes perfectly matched the JEE Main syllabus. So, gear up to succeed – grab your Hydrocarbons Notes now and shine in JEE Main 2024!

Popular Vedantu Learning Centres Near You
Mithanpura, Muzaffarpur
location-imgVedantu Learning Centre, 2nd Floor, Ugra Tara Complex, Club Rd, opposite Grand Mall, Mahammadpur Kazi, Mithanpura, Muzaffarpur, Bihar 842002
Visit Centre
Anna Nagar, Chennai
location-imgVedantu Learning Centre, Plot No. Y - 217, Plot No 4617, 2nd Ave, Y Block, Anna Nagar, Chennai, Tamil Nadu 600040
Visit Centre
Velachery, Chennai
location-imgVedantu Learning Centre, 3rd Floor, ASV Crown Plaza, No.391, Velachery - Tambaram Main Rd, Velachery, Chennai, Tamil Nadu 600042
Visit Centre
Tambaram, Chennai
location-imgShree Gugans School CBSE, 54/5, School road, Selaiyur, Tambaram, Chennai, Tamil Nadu 600073
Visit Centre
Avadi, Chennai
location-imgVedantu Learning Centre, Ayyappa Enterprises - No: 308 / A CTH Road Avadi, Chennai - 600054
Visit Centre
Deeksha Vidyanagar, Bangalore
location-imgSri Venkateshwara Pre-University College, NH 7, Vidyanagar, Bengaluru International Airport Road, Bengaluru, Karnataka 562157
Visit Centre
View More
Competitive Exams after 12th Science

Focus Areas From Hydrocarbons for JEE Main 2024

In the Hydrocarbons chapter, certain topics can boost your JEE Main 2024 scores. Knowing these topics will make your preparation and focus for the exam easier. You can find the list of significant subjects from Hydrocarbons below. 

  • 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 2024.

Easy Access To JEE Main Physics Notes: Chapter-wise Links for 2024

Easily enhance your JEE Main Chemistry preparation for 2024 with our chapter-wise notes. Get The links from the table below:

The Significance of Hydrocarbons Notes for JEE Main 2024

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 hydrocarbons is essential for JEE Main exam preparation. This chapter covers classification, characteristics, reactions, and derivatives of hydrocarbpons and also about petroleum refining, environmental impact, and the rise of biofuels.

Here are few importnat points that makes 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 2024 is crucial. You can grasp the concepts effortlessly by downloading the Hydrocarbons Notes and conducting a fast review.

Strategic Approach: Maximizing Learning with Formulas and Revision Notes

When you want to learn effectively, you can use a smart strategy by combining formulas and revision notes. These two things work together nicely. Formulas are like short explanations of important ideas. When you use them with detailed revision notes, you get a complete way to learn. Revision notes 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.

Most Concepts of Hydrocarbons for JEE Main

1. Alkanes (Saturated Hydrocarbons):

  • General Formula: CₙH₂ₙ₊₂

  • Number of Isomers: 2ⁿ⁻², where n is the number of carbon atoms.

2. Alkenes (Unsaturated Hydrocarbons with Double Bonds):

  • General Formula: CₙH₂ₙ

  • Number of Isomers: 2ⁿ, where n is the number of carbon atoms.

3. Alkynes (Unsaturated Hydrocarbons with Triple Bonds):

  • General Formula: CₙH₂ₙ₋₂

  • Number of Isomers: 2ⁿ⁻², where n is the number of carbon atoms.

4. Aromatic Compounds:

  • Benzene Ring Formula: C₆H₆

  • Resonance Energy: 36 kcal/mol

  • Hückel's Rule: 4n + 2 (where n is an integer) for planar, cyclic, conjugated systems.

5. Isomerism in Hydrocarbons:

  • Structural Isomerism: Same molecular formula but different structural arrangements.

  • Stereoisomerism: Same structural formula but different spatial arrangements (cis-trans isomerism in alkenes).

6. Reactions:

  • Combustion: Hydrocarbon + O₂ → CO₂ + H₂O

  • Addition Reaction in Alkenes: C=C + X₂ → CX-CX (X = halogen)

  • Hydrogenation: C=C + H₂ → C-C

  • Halogenation: CₙH₂ₙ + X₂ → CₙH₂ₙX₂ (X = halogen)

7. Alkene Reactions:

  • Hydration: C = C + H₂O → C-C + H₂O

  • Oxidation: C = C + O₂ → C=O + CO₂

8. Alkyne Reactions:

  • Hydration: C ≡ C + H₂O → C-C + H₂O

  • Oxidation: C ≡ C + O₂ → C=O + CO₂

9. Aromatic Compound Reactions:

  • Substitution Reactions: Benzene undergoes electrophilic substitution reactions.

10. Important Named Reactions:

  • Friedel-Crafts Alkylation and Acylation: Important reactions involving aromatic compounds.

11. Spectroscopy:

  • NMR (Nuclear Magnetic Resonance): Useful for determining the structure of organic compounds.

12. Polymerization:

  • Understand the polymerization process for alkenes (polyethylene, polypropylene) and alkynes.

13. Reaction Intermediates:

  • Carbocation: C⁺

  • Carbanion: C⁻

  • Free Radical: C•

Download JEE Main Chemistry Formulas by Vedantu for FREE. Combine it with JEE Main Notes, and you can see the good changes in your scores.

Wider Learning: More LinksTo Enhance JEE Main 2024 Hydrocarbons

These additional materials will lift your readiness for JEE Main 2024 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 2024 Hydrocarbons preparationTo a higher level.

Achieve Success Through Vedantu’s JEE Main Notes

As you aim for success in your exams, rely on Vedantu's Hydrocarbons JEE Main Notes. We stand out with our special way of teaching that combines expert help and easy-to-use materials. Our detailed revision notes 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.

FAQs on JEE Main - Hydrocarbons Notes (Free PDF Download)

1. What are the most important topics included in Hydrocarbons Notes for JEE Main 2024?

The most important topics in Hydrocarbons for JEE Main 2024 are:

  • Nomenclature of Hydrocarbons

  • Classification of Hydrocarbons

  • Isomerism in Hydrocarbons

  • Physical Properties of Hydrocarbons

  • Chemical Properties of Hydrocarbons

  • Reactions of Hydrocarbons

  • Alkanes

  • Alkenes

  • Alkynes

  • Aromatic Hydrocarbons

2. What is the weightage of hydrocarbon notes for JEE Main 2024?

The weightage of Hydrocarbons in JEE Main 2024 is around 1.33%. This means that about 1-2 questions from Hydrocarbons are expected to be asked in the JEE Main 2024 exam.

3. Which is the easiest topic of JEE Main 2024 Hydrocarbons Notes?

The easiest topic in JEE Main 2024 Hydrocarbons Notes is Nomenclature of Hydrocarbons. This is because it is a purely theoretical topic and does not require any calculations.

4. How much time is required to prepared for JEE Main 2024 Hydrocarbons Notes?

The amount of time required to prepare for JEE Main 2024 Hydrocarbons Notes depends on your individual level of understanding of the subject. However, a good rule of thumb is to set aside at least 2-3 weeks for this topic.

5. Where can I get other materials to supplement the JEE Main 2024 Hydrocarbons Notes?

There are many other materials available to supplement your JEE Main 2024 Hydrocarbons Notes. These include:

  • Online courses and tutorials

  • Practice questions and mock tests

  • Books and articles on Hydrocarbons

  • Discussion forums and study groups

6. How can I make my own JEE Main Hydrocarbons notes?

To make your own JEE Main Hydrocarbons notes, you can follow these steps:

  • Start by reading the textbook thoroughly.

  • Take notes on the important concepts and equations.

  • Solve practice questions to test your understanding.

  • Revise your notes regularly.

  • Share your notes with your friends and classmates.

7. What is Hydrocarbons in the context of JEE Main 2024?

Hydrocarbons are organic compounds that are composed of only hydrogen and carbon atoms. They are the basic building blocks of many other organic compounds, such as plastics, fuels, and pharmaceuticals.

In the context of JEE Main 2024, Hydrocarbons is a relatively important topic. A few questions from this topic are expected to be asked in the exam. Therefore, it is important to have a good understanding of the basics of Hydrocarbons.

8. Are there any common mistakes students make in Hydrocarbons problems?

Yes, there are a few common mistakes that students make in Hydrocarbons problems. These include:

  • Making careless mistakes in calculations

  • Not understanding the basic concepts of Hydrocarbons

  • Not practicing enough

  • Not revising their notes regularly

To avoid these mistakes, it is important to be careful, practice regularly, and revise your notes regularly.

9. What are the uses of Alcohol?

Alcohol is used in many different applications. This includes its use as a solvent, antifreeze preparations, and the formation of esters. Many types of alcoholic beverages are produced using ethanol that has a low boiling point. This allows for the easy distillation of the Alcohol. Methanol is another type of Alcohol that is used in various applications, such as in antifreeze preparations and as a fuel additive. It is also used to produce formaldehyde, which has many industrial applications. People often use alcohol as a disinfectant or sanitiser, which can be used on both humans and objects. The best example of this is the use of ethanol in mouthwashes. People all over the world consume alcohol either by drinking or by eating food that contains it. There are many alcoholic beverages that have been produced by fermenting different types of fruits and grains.