JEE Strategy3 min read
Most Repeated JEE Main Chemistry Concepts (Top 15, 2022–2026)
The 15 Chemistry concepts JEE Main has come back to most between 2022 and 2026, with year-wise counts and the chapter each one belongs to.
Edurack
October 21, 2026
A chapter is a large unit. Inside it, JEE Main keeps returning to a handful of ideas. This list shows the Chemistry concepts with the most questions across 2022–2026, all shifts counted.
Top 15 Chemistry concepts
| # | Concept | Chapter | 2022 | 2023 | 2024 | 2025 | 2026 | Total |
|---|---|---|---|---|---|---|---|---|
| 1 | Mole Concept and Molar Mass | Some Basic Concepts in Chemistry | 4 | 5 | 2 | 15 | 16 | 42 |
| 2 | Concentration Terms | 11 | 5 | 9 | 5 | 5 | 35 | |
| 3 | Magnetic Moment (Valence Bond Theory) | Coordination Compounds | 5 | 7 | 5 | 8 | 7 | 32 |
| 4 | First Order Reaction | Chemical Kinetics | 9 | 2 | 3 | 7 | 8 | 29 |
| 5 | Percentage Composition and Equivalent Weight | Some Basic Concepts in Chemistry | 3 | 2 | 7 | 8 | 9 | 29 |
| 6 | Depression in Freezing Point | Solutions | 9 | 5 | 2 | 5 | 6 | 27 |
| 7 | Solubility and Solubility Product | Equilibrium | 9 | 4 | 3 | 6 | 5 | 27 |
| 8 | Stoichiometry and Limiting Reagent | Some Basic Concepts in Chemistry | 7 | 13 | 4 | 0 | 2 | 26 |
| 9 | KMnO4 | d- and f-Block Elements | 4 | 11 | 3 | 3 | 3 | 24 |
| 10 | Applications of Crystal Field Theory | Coordination Compounds | 13 | 5 | 6 | 0 | 0 | 24 |
| 11 | Magnetic Properties and Character | 4 | 6 | 2 | 5 | 6 | 23 | |
| 12 | Disaccharides and Polysaccharides | Biomolecules | 11 | 7 | 1 | 1 | 1 | 21 |
| 13 | Ionisation Enthalpy | Classification of Elements and Periodicity | 5 | 3 | 3 | 0 | 6 | 17 |
| 14 | Chromatography | Purification and Characterisation of Organic Compounds | 3 | 4 | 6 | 2 | 1 | 16 |
| 15 | Effect of Temperature on Rate of Reaction | Chemical Kinetics | 6 | 4 | 3 | 2 | 1 | 16 |
What to take from it
- Master the top five first. Mole Concept and Molar Mass, Concentration Terms, Magnetic Moment (Valence Bond Theory), First Order Reaction and Percentage Composition and Equivalent Weight account for 167 questions between them.
- Look at the year pattern. A concept asked in all five years is a safer investment than one that appeared in a single year.
- Go to the chapter. Each concept sits inside a chapter. Read the chapter guide for its full scope and traps.
Frequently Asked Questions
Which Chemistry concept has been asked most in JEE Main?
Mole Concept and Molar Mass, with 42 questions across 2022–2026.
Do concepts repeat word for word?
Rarely. The idea repeats, but numbers, data and phrasing change.