Explore: All JEE Main chapters · JEE Main hub · JEE Main 2026 · Syllabus & pattern
Answer first
JEE Main Chemistry PYQs (previous year questions), chapter wise: we tagged 285 Chemistry questions from 11 official JEE Main papers (2016–2026). The chapters asked most are Equilibrium (19), Hydrocarbons (19), Coordination Compounds (18). Open any chapter for every question it has had with the official answer.
Chemistry chapters ranked by questions
- Equilibrium PYQs: 19 questions; most asked: Equilibrium Constant
- Hydrocarbons PYQs: 19 questions; most asked: Free Radical Halogenation
- Coordination Compounds PYQs: 18 questions; most asked: Crystal Field Theory
- Organic Compounds Containing Oxygen PYQs: 18 questions; most asked: Acidity of Phenols and Acids
- Organic Compounds Containing Nitrogen PYQs: 16 questions; most asked: Diazonium Salts
- Some Basic Concepts in Chemistry PYQs: 15 questions; most asked: Mole Concept
- Chemical Kinetics PYQs: 15 questions; most asked: First Order Kinetics
- Classification of Elements and Periodicity PYQs: 15 questions; most asked: Ionisation Enthalpy
- d- and f-Block Elements PYQs: 15 questions; most asked: Potassium Dichromate
- Atomic Structure PYQs: 14 questions; most asked: Bohr Model
- Chemical Thermodynamics PYQs: 14 questions; most asked: Hess’s Law
- Biomolecules PYQs: 14 questions; most asked: Carbohydrates
- Chemical Bonding and Molecular Structure PYQs: 13 questions; most asked: Molecular Orbital Theory
- Solutions PYQs: 13 questions; most asked: Colligative Properties
- Some Basic Principles of Organic Chemistry PYQs: 13 questions; most asked: IUPAC Nomenclature
- Redox Reactions and Electrochemistry PYQs: 12 questions; most asked: Nernst Equation
- p-Block Elements PYQs: 12 questions; most asked: Halogens
- Organic Compounds Containing Halogens PYQs: 11 questions; most asked: SN1 Reactivity
- Purification and Characterisation of Organic Compounds PYQs: 10 questions; most asked: Distillation
- Principles Related to Practical Chemistry PYQs: 9 questions; most asked: Salt Analysis
Chemistry questions per paper by year
| Chapter | 2026 ×9 | 2017 | 2016 | All questions |
|---|---|---|---|---|
| Some Basic Concepts in Chemistry | 1 | 3 | 3 | 15 |
| Atomic Structure | 1.3 | 1 | 1 | 14 |
| Chemical Bonding and Molecular Structure | 1.1 | 2 | 1 | 13 |
| Chemical Thermodynamics | 1.2 | 2 | 1 | 14 |
| Solutions | 1.1 | 2 | 1 | 13 |
| Equilibrium | 1.8 | 1 | 2 | 19 |
| Redox Reactions and Electrochemistry | 1.1 | 1 | 1 | 12 |
| Chemical Kinetics | 1.4 | 1 | 1 | 15 |
| Classification of Elements and Periodicity | 1.1 | 2 | 3 | 15 |
| p-Block Elements | 0.8 | 2 | 3 | 12 |
| d- and f-Block Elements | 1.4 | 1 | 1 | 15 |
| Coordination Compounds | 1.7 | 1 | 2 | 18 |
| Purification and Characterisation of Organic Compounds | 1 | 0 | 1 | 10 |
| Some Basic Principles of Organic Chemistry | 1.2 | 1 | 1 | 13 |
| Hydrocarbons | 1.8 | 1 | 2 | 19 |
| Organic Compounds Containing Halogens | 0.7 | 3 | 2 | 11 |
| Organic Compounds Containing Oxygen | 1.7 | 2 | 1 | 18 |
| Organic Compounds Containing Nitrogen | 1.4 | 2 | 1 | 16 |
| Biomolecules | 1.3 | 1 | 1 | 14 |
| Principles Related to Practical Chemistry | 0.8 | 1 | 1 | 9 |
Most-asked Chemistry concepts
| Concept | Chapter | Questions | Papers |
|---|---|---|---|
| Equilibrium Constant | Equilibrium | 6 | 6 |
| Carbohydrates | Biomolecules | 6 | 6 |
| Mole Concept | Some Basic Concepts in Chemistry | 6 | 5 |
| Crystal Field Theory | Coordination Compounds | 5 | 5 |
| Stoichiometry | Some Basic Concepts in Chemistry | 5 | 5 |
| Amino Acids | Biomolecules | 5 | 5 |
| First Order Kinetics | Chemical Kinetics | 5 | 4 |
| Arrhenius Equation | Chemical Kinetics | 4 | 4 |
| Ionisation Enthalpy | Classification of Elements and Periodicity | 4 | 4 |
| Colligative Properties | Solutions | 4 | 4 |
| Werner’s Theory | Coordination Compounds | 3 | 3 |
| Diazonium Salts | Organic Compounds Containing Nitrogen | 3 | 3 |
| Bohr Model | Atomic Structure | 3 | 3 |
| Hess’s Law | Chemical Thermodynamics | 3 | 3 |
| Molecular Orbital Theory | Chemical Bonding and Molecular Structure | 3 | 3 |
How to use JEE Main Chemistry PYQs
- Start with the chapters at the top of the ranking. They carry the most questions.
- For each chapter, solve its PYQs year by year from the official PDFs, then check the answers.
- Log misses by concept. When a concept repeats in your log, go back to that chapter’s concept table.
- Finish with full JEE Main papers from the year pages to practise timing.
Other JEE Main subjects
FAQ
Which Chemistry chapters are most important for JEE Main?
By questions in the official papers we tagged (2016–2026): Equilibrium (19), Hydrocarbons (19), Coordination Compounds (18). The table on this page ranks every Chemistry chapter.
How many Chemistry questions are in these JEE Main PYQs?
285 Chemistry questions across 11 official JEE Main papers from 2016–2026, spread over 20 chapters.
Are these JEE Main Chemistry PYQs official?
Yes. Every question is from an official JEE Main paper hosted on our year pages. Summaries are ours; the full question is in the official PDF linked beside it.