# JEE Main Chemistry PYQ Chapter Wise (2016–2026)
> JEE Main Chemistry PYQs chapter wise: all 285 questions from 11 official JEE Main papers (2016–2026), chapter by chapter with official answers.
Source: https://previousyearquestions.app/jee-main/chapters/chemistry/
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](/jee-main/chapters/equilibrium/) (19), [Hydrocarbons](/jee-main/chapters/hydrocarbons/) (19), [Coordination Compounds](/jee-main/chapters/coordination-compounds/) (18). Open any chapter for every question it has had with the official answer.
## Chemistry chapters ranked by questions
1. [Equilibrium PYQs](/jee-main/chapters/equilibrium/): 19 questions; most asked: Equilibrium Constant
2. [Hydrocarbons PYQs](/jee-main/chapters/hydrocarbons/): 19 questions; most asked: Free Radical Halogenation
3. [Coordination Compounds PYQs](/jee-main/chapters/coordination-compounds/): 18 questions; most asked: Crystal Field Theory
4. [Organic Compounds Containing Oxygen PYQs](/jee-main/chapters/organic-oxygen/): 18 questions; most asked: Acidity of Phenols and Acids
5. [Organic Compounds Containing Nitrogen PYQs](/jee-main/chapters/organic-nitrogen/): 16 questions; most asked: Diazonium Salts
6. [Some Basic Concepts in Chemistry PYQs](/jee-main/chapters/basic-concepts-chemistry/): 15 questions; most asked: Mole Concept
7. [Chemical Kinetics PYQs](/jee-main/chapters/chemical-kinetics/): 15 questions; most asked: First Order Kinetics
8. [Classification of Elements and Periodicity PYQs](/jee-main/chapters/periodicity/): 15 questions; most asked: Ionisation Enthalpy
9. [d- and f-Block Elements PYQs](/jee-main/chapters/d-f-block/): 15 questions; most asked: Potassium Dichromate
10. [Atomic Structure PYQs](/jee-main/chapters/atomic-structure/): 14 questions; most asked: Bohr Model
11. [Chemical Thermodynamics PYQs](/jee-main/chapters/chemical-thermodynamics/): 14 questions; most asked: Hess's Law
12. [Biomolecules PYQs](/jee-main/chapters/biomolecules/): 14 questions; most asked: Carbohydrates
13. [Chemical Bonding and Molecular Structure PYQs](/jee-main/chapters/chemical-bonding/): 13 questions; most asked: Molecular Orbital Theory
14. [Solutions PYQs](/jee-main/chapters/solutions/): 13 questions; most asked: Colligative Properties
15. [Some Basic Principles of Organic Chemistry PYQs](/jee-main/chapters/basic-principles-organic/): 13 questions; most asked: IUPAC Nomenclature
16. [Redox Reactions and Electrochemistry PYQs](/jee-main/chapters/redox-electrochemistry/): 12 questions; most asked: Nernst Equation
17. [p-Block Elements PYQs](/jee-main/chapters/p-block/): 12 questions; most asked: Halogens
18. [Organic Compounds Containing Halogens PYQs](/jee-main/chapters/organic-halogens/): 11 questions; most asked: SN1 Reactivity
19. [Purification and Characterisation of Organic Compounds PYQs](/jee-main/chapters/purification-characterisation-organic/): 10 questions; most asked: Distillation
20. [Principles Related to Practical Chemistry PYQs](/jee-main/chapters/practical-chemistry/): 9 questions; most asked: Salt Analysis
## Chemistry questions per paper by year
## Most-asked Chemistry concepts
| Concept | Chapter | Questions | Papers |
|---|---|---|---|
| Equilibrium Constant | [Equilibrium](/jee-main/chapters/equilibrium/) | 6 | 6 |
| Carbohydrates | [Biomolecules](/jee-main/chapters/biomolecules/) | 6 | 6 |
| Mole Concept | [Some Basic Concepts in Chemistry](/jee-main/chapters/basic-concepts-chemistry/) | 6 | 5 |
| Crystal Field Theory | [Coordination Compounds](/jee-main/chapters/coordination-compounds/) | 5 | 5 |
| Stoichiometry | [Some Basic Concepts in Chemistry](/jee-main/chapters/basic-concepts-chemistry/) | 5 | 5 |
| Amino Acids | [Biomolecules](/jee-main/chapters/biomolecules/) | 5 | 5 |
| First Order Kinetics | [Chemical Kinetics](/jee-main/chapters/chemical-kinetics/) | 5 | 4 |
| Arrhenius Equation | [Chemical Kinetics](/jee-main/chapters/chemical-kinetics/) | 4 | 4 |
| Ionisation Enthalpy | [Classification of Elements and Periodicity](/jee-main/chapters/periodicity/) | 4 | 4 |
| Colligative Properties | [Solutions](/jee-main/chapters/solutions/) | 4 | 4 |
| Werner's Theory | [Coordination Compounds](/jee-main/chapters/coordination-compounds/) | 3 | 3 |
| Diazonium Salts | [Organic Compounds Containing Nitrogen](/jee-main/chapters/organic-nitrogen/) | 3 | 3 |
| Bohr Model | [Atomic Structure](/jee-main/chapters/atomic-structure/) | 3 | 3 |
| Hess's Law | [Chemical Thermodynamics](/jee-main/chapters/chemical-thermodynamics/) | 3 | 3 |
| Molecular Orbital Theory | [Chemical Bonding and Molecular Structure](/jee-main/chapters/chemical-bonding/) | 3 | 3 |
## How to use JEE Main Chemistry PYQs
1. Start with the chapters at the top of the ranking. They carry the most questions.
2. For each chapter, solve its PYQs year by year from the official PDFs, then check the answers.
3. Log misses by concept. When a concept repeats in your log, go back to that chapter's concept table.
4. Finish with full JEE Main papers from the year pages to practise timing.
## Other JEE Main subjects
- [JEE Main Mathematics PYQs](/jee-main/chapters/mathematics/)
- [JEE Main Physics PYQs](/jee-main/chapters/physics/)
## 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.