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JEE Important Concepts - Chemistry Topic Pages


Mastering the Key Concepts for JEE Chemistry: A Comprehensive Guide

Chemistry is considered the easiest subject in the JEE Main compared to the other two, Mathematics and Physics. To make things easier, we need to know which topics we need to study for JEE Main. If you have started preparing but need to know which chapters are for JEE Main. Vedantu will assist you in overcoming this confusion.

The Joint Entrance Examination (JEE) is a renowned engineering entrance exam in India that assesses students' understanding of chemistry concepts. Some of the important concepts in chemistry that students should be familiar with for the JEE include chemical bonding, thermodynamics, and organic chemistry. Chemical bonding covers the different types of chemical bonds such as covalent, ionic, metallic, and hydrogen bonds. Thermodynamics is the study of energy changes that occur during chemical reactions, including enthalpy, entropy, and Gibbs free energy. Organic chemistry is the study of compounds that contain carbon atoms and includes basic concepts such as isomerism, nomenclature, and functional groups. Understanding these concepts is crucial for scoring well in the JEE chemistry section.

Last updated date: 01st Jun 2023
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Understanding Chemistry Important Chapters for JEE Main 2023

After reviewing and analysing previous years' question papers, the table below gives the most relevant Chemistry important topics, classified by chapter, to help you perform well in the JEE Main 2023 Exam.

Physical Chemistry Weightage in JEE Mains

  • The Physical Chemistry section consists of a lot of numerical problems.

  • It covers topics such as Redox Reaction, Mole Concept and Their Equivalences, Solid States, Gas Theory, Thermochemistry, and Thermodynamics.

  • Also, it is essential to know important formulae and/or logic to solve questions to gain accuracy.

Inorganic Chemistry Weightage in JEE Mains

  • Inorganic Chemistry’s most scoring topic is ‘Chemical Bonding and Periodic Tables.’

  • Maximum questions from this unit are in the context of bond formation, bond breaking, and periodicity, S-Block, F-Block, D and F-Block elements, etc.

Organic Chemistry Weightagein JEE Mains

  • JEE Main Organic Chemistry is mostly concept based.

  • Candidates could score good marks focusing on carbonyl group reactions and their mechanisms.

  • The physical properties of organic groups, the polarisation of carbonyl compounds, and the hydrogen and carbon groups are the most frequently asked questions in the JEE Main Examination.

Most Important Topics for JEE Mains Chemistry 2023

After reviewing and analysing previous years' question papers, the list below gives the most important topics in chemistry for JEE Mains, classified by chapter, to help you perform well in the JEE Main 2023 Exam.

Coordination Compounds

  • Addition Compounds or Molecular Compounds

  • Terminologies Related to Coordination Compounds

  • Types of Ligands – 1

  • Oxidation Number

  • Coordination Number

Purification and Characterisation of Organic Compounds

  • Sublimation and Crystallisation

  • Distillation under reduced pressure and Steam distillation

  • Chromatography

  • Test for Halogens

  • Duma’s Method

Some Basic Principles of Organic Chemistry

  • Functional Group

  • IUPAC Nomenclature – 1

  • Carbocations

  • Carbanions

  • Alkyl Free Radicals

Organic Compounds containing Halogens

  • Nature of C-X Bond and Physical Properties

  • Reaction with PCl5, PCl3, SOCl2 and HX

  • Strong and Weak Bases

  • SN2 Reaction

  • SN1 Reaction

Organic Compounds containing Oxygen

  • Grignard Reagent – 1

  • Reduction by LiAlH4 and NaBH4

  • Acylation and Oxidation of Alcohols

  • The reaction of Phenols with dil. HNO3

  • Preparation of Aldehydes

Chemistry in Everyday Life

  • Analgesics

  • Antibiotics

  • Preservatives

Principles Related to Practical Chemistry

  • Preliminary Test with Dilute Sulphuric Acid (Systematic Analysis of Anions):

  • Analysis of Cations

Chemical Bonding and Molecular Structure

  • Lewis Representation of Simple Molecules (Lewis Structure)

  • Limitations of The Octet Rule

  • Bond Parameters: length, angle, energy, strength

  • Fazan’s Rule and Covalent Character in Ionic Bond

  • p$\pi$-p$\pi$ and p$\pi$-d$\pi$ Bonding

Classification of Elements and Periodic Table

  • Long-form of the Modern periodic table

  • Classification of Elements: s-block

  • Atomic Radius of Elements

  • Variation of Atomic Radii and ionic radii

  • Ionisation Enthalpy or Ionisation Potential

Some Basic Concepts in Chemistry

  • Empirical Formula And Molecular Formula

  • Mole concept and molar mass

  • Stoichiometry, Stoichiometric Calculations, And Limiting Reagent

  • Reactions in Solutions

States of Matter

  • The Gas Laws- Boyle’s Law (Pressure-Volume Relationship)

  • Intermolecular Forces

  • Ideal Gas Equation

  • Dalton’s Law of Partial Pressure

  • Graham’s Law of Diffusion

Atomic Structure

  • Photoelectric effect

  • Line spectrum of hydrogen

  • Radius, velocity, and the energy of nth Bohr orbital

  • De Broglie wavelength

  • Heisenberg’s uncertainty principle

Chemical Thermodynamics

  • Path, State Function, Types Of Process

  • Reversible, Irreversible, Polytropic Process

  • First Law Or Law Of Conservation Of Energy

  • Isothermal Reversible And Isothermal Irreversible

  • Adiabatic Reversible And Irreversible Expansion

Redox Reaction and Electrochemistry

  • Balancing of Redox Reactions

  • Oxidation Number and Oxidation State

  • Types of Redox Reactions

  • Balancing of Redox Reaction: Ion Electrode Method

  • Balancing of Disproportionation Redox Reaction: Ion Electrode Method

General Principle and Process of Isolation of Metals

  • Froth Floatation Process

  • Leaching: Chemical Method

  • Conversion of ore into oxide – Calcination and Roasting

  • Electrolytic Refining

  • Vapour Phase Refining

S – Block Elements (Alkali and Alkaline Earth Metals)

  • Chemical Properties of Alkali Metals – 1

  • Chemical Properties of Alkali Metals – 2

  • Anomalous Behaviour of Lithium

  • Halides of Alkali Metals

  • Sodium Chloride and Sodium Hydroxide

d – and f – BLOCK ELEMENTS

  • Screening Effect and Lanthanoid Contraction

  • Atomic Size/Radii

  • Ionisation Energy

  • Oxidation State

  • Magnetic Properties and Character

Preparation Tips for Chemistry

JEE Main features an equal number of questions in its three sections. According to the revised JEE Main test format, the Chemistry section comprises 25 compulsory questions worth 4 points each. The table below illustrates the unit-wise weightage for each JEE Main Chemistry subsection.


Overall Weightage (%)

Physical Chemistry


Organic Chemistry


Inorganic Chemistry


After you have completed all of the JEE Main Chemistry syllabus, try the JEE Main previous year question papers and the JEE mock test 2023 to see how well you have prepared for the examination. If you need further assistance boosting your entrance exam preparation, enroll in our JEE crash course and learn from Vedantu's experts.


Important Concepts of Chemistry topic pages provide a valuable resource for students preparing for the Chemistry section of the JEE exam. The tips and tricks provided on each page of Vedantu help students approach complex problems more efficiently. Whether you're a beginner or an advanced learner, our JEE Important Concepts Chemistry topic pages are designed to help you improve your score and succeed in the JEE exam. Start exploring Vedantu’s topic pages today to enhance your knowledge of Chemistry concepts and excel in the JEE exam.

FAQs on JEE Important Concepts - Chemistry Topic Pages

1. What are JEE Important Concepts Chemistry topic pages?

The JEE Important Concepts Chemistry topic pages thoroughly review the essential Chemistry topics for JEE Main and Advanced. These topic pages in Chemistry cover various topics' fundamental concepts, important equations, and applications.

2. What is the significance of JEE Important Concepts Chemistry topic pages?

JEE important Concepts Chemistry topic pages are crucial since they provide a brief yet thorough review of the key Chemistry topics. They help students improve their knowledge of concepts and problem-solving skills, which are essential for performing well on the JEE Chemistry exam.

3. What are the topics covered on the JEE Important Concepts Chemistry topic pages?

The JEE Important Concepts Chemistry page contains the essential Chemistry topics for JEE Main and Advanced, including Physical Chemistry, Inorganic Chemistry, and Organic Chemistry.

4. How can I prepare for JEE by using JEE Important Concepts Chemistry topic pages?

Students should review the main ideas and topics included in the test to prepare for JEE utilising the JEE main ideas Chemistry topic sites. You can also strengthen problem-solving skills by practising with the previous year's exams and simulated tests. Taking regular breaks, concentrating, and sticking to a regular study routine are also critical.

5. Are the JEE Important Concepts Chemistry topic pages enough for JEE preparation?

While the JEE Important Concepts Chemistry topic pages provide a thorough overview of the important topics for JEE Mains Chemistry, they need to be more sufficient for JEE preparation on their own. It is also recommended that you refer to Vedantu’s study materials, expert videos, and practise papers to ensure that you thoroughly understand the subject.