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    Most Weightage Chapters for JEE Main Chemistry 2027: Topic-wise

    Most Weightage Chapters for JEE Main Chemistry 2027: Topic-wise

    Shivani PooniaUpdated on 10 Aug 2026, 12:47 PM IST

    Chemistry is a high-scoring section in JEE Main when you prepare correctly you focus on right chapters and practise regularly. However, NTA does not release an official chapter-wise weightage for JEE Main 2027. To help students plan their preparation stretagy, in this article we have analysed 475 Chemistry questions from the January and April 2026 JEE Main sessions. It tels you the chapters and topics that appeared most frequently and can help you prioritise your revision for JEE Main exam.

    In this article, we will break down the JEE Main Chemistry chapter-wise weightage using exam-pattern data from the 2026 sessions (January and April combined), so you know precisely which chapters deserve your attention first.

    This Story also Contains

    1. JEE Main Chemistry Syllabus 2027
    2. JEE Main Chemistry Chapter-Wise Weightage 2027: Based on 2026 Paper Analysis
    3. High Weightage Chapters for JEE Main Chemistry
    4. Top 10 Most Weightage Chapters for JEE Main Chemistry
    5. JEE Main Chemistry Most Asked Topic-Wise Weightage
    6. JEE Main 2026 Chemistry Chapter-Wise Weightage: Class 11 vs Class 12
    7. Best Chapters to Study for JEE Main Chemistry: Preparation Strategy
    8. JEE Main 2027 Practice and Mock Tests
    Most Weightage Chapters for JEE Main Chemistry 2027: Topic-wise
    Most Weightage Chapters for JEE Main Chemistry 2027

    JEE Main Chemistry Syllabus 2027

    JEE Main Chemistry is divided into three broad branches. Branch-wise syllabus and weightage are given in the table below:

    Branch

    Approx. Weightage

    Key Chapters

    Physical Chemistry

    37.05%

    Atomic Structure, Thermodynamics, Equilibrium, Chemical Kinetics, Redox & Electrochemistry, Solutions, Basic Concepts, Practical Chemistry

    Organic Chemistry

    35.58%

    Basic Principles of Organic Chemistry, Hydrocarbons, Halogen/Oxygen/Nitrogen Compounds, Purification & Characterisation, Biomolecules

    Inorganic Chemistry

    27.37%

    Classification of Elements & Periodicity, Chemical Bonding, p-Block, d- & f-Block Elements, Co-ordination Compounds

    Also Read: JEE Main Chemistry Syllabus 2027

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    JEE Main Chemistry Chapter-Wise Weightage 2027: Based on 2026 Paper Analysis

    So, based on the January and April 2026 sessions put together, a total of 475 Chemistry questions were asked in JEE Main. The table below shows the overall JEE Main Chemistry chapter-wise weightage, ordered from the highest to the lowest.

    Chapter Name

    No. of Questions January Session 2026

    No. of Questions April Session 2026

    Weightage

    Co-ordination Compounds

    23

    17

    8.42%

    Organic Compounds Containing Oxygen

    22

    14

    7.58%

    Hydrocarbons

    13

    17

    6.32%

    Organic Compounds Containing Nitrogen

    14

    13

    5.68%

    Redox Reactions and Electrochemistry

    16

    11

    5.68%

    Atomic Structure

    14

    12

    5.47%

    Chemical Kinetics

    13

    13

    5.47%

    Equilibrium

    11

    15

    5.47%

    Some Basic Principles of Organic Chemistry

    14

    12

    5.47%

    Chemical Bonding and Molecular Structure

    12

    12

    5.05%

    Chemical Thermodynamics

    13

    11

    5.05%

    Solutions

    14

    10

    5.05%

    Some Basic Concepts in Chemistry

    14

    9

    4.84%

    Biomolecules

    9

    13

    4.63%

    d- and f-Block Elements

    11

    11

    4.63%

    Classification of Elements and Periodicity

    9

    10

    4.00%

    Purification and Characterisation of Organic Compounds

    9

    10

    4.00%

    p-Block Elements

    10

    8

    3.79%

    Organic Compounds Containing Halogens

    4

    5

    1.89%

    Principles Related to Practical Chemistry

    5

    2

    1.47%

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    High Weightage Chapters for JEE Main Chemistry

    If you want to prioritise the most asked chapters, these are the high weightage chapters for JEE Main Chemistry that consistently deliver the most marks:

    You can watch the video for more details:


    Chapter

    Weightage

    Frequently Asked Topics

    Coordination Compounds

    8.42%

    Crystal Field Theory (CFT), Valence Bond Theory (VBT), magnetic moment, IUPAC nomenclature, geometrical and optical isomerism

    Organic Compounds Containing Oxygen

    7.58%

    Alcohols, phenols, ethers, aldehydes, ketones, carboxylic acids, named reactions, reaction mechanisms

    Hydrocarbons

    6.32%

    Alkanes, alkenes, alkynes, aromatic compounds, aromaticity, electrophilic substitution, reaction mechanisms

    Organic Compounds Containing Nitrogen

    5.68%

    Amines, diazonium salts, coupling reactions, diazotisation (NaNO₂ + HCl), reactions of aromatic amines

    Redox Reactions and Electrochemistry

    5.68%

    Oxidation number, balancing redox equations, electrochemical cells, Nernst equation, KMnO₄- and K₂Cr₂O₇-based reactions

    Top 10 Most Weightage Chapters for JEE Main Chemistry

    If you want to prioritise the top 10 most-asked chapters from the past year, then this table will help you find those chapters easily.

    Rank

    Chapter Name

    January Session

    April Session

    Total Questions (2026)

    Weightage

    1

    Co-ordination Compounds

    23

    17

    40

    8.42%

    2

    Organic Compounds Containing Oxygen

    22

    14

    36

    7.58%

    3

    Hydrocarbons

    13

    17

    30

    6.32%

    4

    Organic Compounds Containing Nitrogen

    14

    13

    27

    5.68%

    5

    Redox Reactions and Electrochemistry

    16

    11

    27

    5.68%

    6

    Atomic Structure

    14

    12

    26

    5.47%

    7

    Chemical Kinetics

    13

    13

    26

    5.47%

    8

    Equilibrium

    11

    15

    26

    5.47%

    9

    Some Basic Principles of Organic Chemistry (GOC)

    14

    12

    26

    5.47%

    10

    Chemical Bonding and Molecular Structure

    12

    12

    24

    5.05%

    JEE Main Syllabus: Subjects & Chapters
    Select your preferred subject to view the chapters

    JEE Main Chemistry Most Asked Topic-Wise Weightage

    Beyond the chapters, it helps to know which subtopics inside them are constantly being asked. The table below gives a JEE Main Chemistry topic-wise weightage breakdown based on a deep analysis of previous years' questions (PYQs), so you know where to concentrate.

    Topic

    Approx. Questions (PYQ Trend)

    Mole Concept and Molar Mass

    16

    Magnetic Moment (based on VBT)

    10

    Crystal Field Splitting in the Octahedral Field

    10

    Percentage Composition and Equivalent Weight

    9

    First-Order Reaction

    8

    Reduction and Oxidation Reaction

    7

    Depression in Freezing Point

    6

    Magnetic Properties and Character

    6

    Ionisation Enthalpy / Ionisation Potential

    6

    Stereoisomerism

    6

    Concentration Terms

    5

    Solubility and Solubility Product

    5

    Coupling Reaction

    4

    Shapes of Molecules

    4

    Amino Acids

    4

    Elevation in Boiling Point

    4

    Stoichiometry and Limiting Reagent

    3

    Applications of CFT

    3

    KMnO4-Based Reactions

    3

    Reaction with NaNO2 + HCl

    3

    Proteins

    3

    Types of Equilibrium Constant

    3

    Oxidation State

    2

    Disaccharides and Polysaccharides

    1

    Wet Tests for Identification of Cations

    1

    Chromatography

    1

    Ideal Gas Equation

    1

    Nucleophilic Addition Reaction

    1

    Aromaticity

    1

    JEE Main 2026 Chemistry Chapter-Wise Weightage: Class 11 vs Class 12

    Class-wise Distribution of Chemistry Questions (JEE Main 2026 vs 2025)

    Year

    Class

    April Session

    January Session

    2026

    XI

    108

    123


    XII

    117

    127

    2025

    XI

    90

    113


    XII

    135

    137

    Section-wise Question distribution of Chemistry (JEE Main 2026 vs 2025)

    Year

    Organic Chemistry

    Physical Chemistry

    Inorganic Chemistry

    2026

    169 questions

    176 questions

    130 questions

    2025

    169 questions

    176 questions

    130 questions

    Best Chapters to Study for JEE Main Chemistry: Preparation Strategy

    Knowing the weightage is only half the battle, here’s how to turn this data into a real study plan for the best chapters to study for JEE Main Chemistry:

    • Start with the most “heavy” chapters, like Coordination Compounds, Equilibrium, Chemical Kinetics, and Atomic Structure; these should be your first focus points, kinda thing.

    • Then go NCERT-first, seriously. In Chemistry, a big chunk of the questions, especially from Inorganic and Organic Chemistry, are basically lifted, not word-for-word but closely, from NCERT lines and the examples they give.

    • After that, do topic-wise PYQs. Don’t jump into random mixed papers too early, instead, solve chapter-wise and topic-wise sets so you internalise the recurring question patterns and the way they like to trap you.

    • For low-weightage chapters, revise smartly, not deeply for hours. Like Organic Compounds Containing Halogens and Principles Related to Practical Chemistry, these usually carry less weightage, so a quick revision of formulas and facts is often sufficient, rather than doing heavy concept digging.

    • Also, keep a formula and reaction notebook. This helps a lot in Physical and Organic, a compact page-style list of formulas, named reactions, and exceptions can be a lifesaver in last-minute revision.

    • Finally, attempt full-length mock tests. Use them to apply the chapter-wise weightage logic in a timed full-syllabus setting, that way, you figure out the ideal order to attempt chapters on exam day, rather than guessing blindly at the start.

    JEE Main Last Five Year Analysis (2026-2022)
    Boost your JEE Main preparation with the Last 5 Years Analysis (2026–2022). Discover chapter-wise trends, difficulty levels & high-weightage topics.
    Try Now

    JEE Main 2027 Practice and Mock Tests

    Below are links for JEE Main 2027 Mock Tests and Sample Papers.

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    Frequently Asked Questions (FAQs)

    Q: Is 70 a bad score in JEE Mains?
    A:

    Good or bad depends upon your category. Scoring 70 marks gives you a percentile score of 82 to 90.

    Q: What is the high-weightage chapter of JEE Main 2026 Chemistry?
    A:

    The highest weightage chapter of JEE Main 2026 Chemistry is Coordination Compounds.

    Q: How many chapters are in JEE Main Chemistry?
    A:

    There are 20 chapters, which are divided into physical, organic and inorganic chemistry.

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    On Question asked by student community

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    Hi Kartik,

    For JEE Main preparation, you can check the link below, where you can download free notes, sample papers, mock tests, high-scoring topics, weightage, preparation guides, and much more.

    https://engineering.careers360.com/download/jee-main-ebooks-and-sample-papers