JEE Main Kinetic Theory of Gases: Weightage, Key Concepts and Study Plan
Kinetic Theory of Gases in JEE Main: 87 questions across 2022–2026, rank #17 of 20 in Physics, stable momentum. Year-wise data, key concepts and a study plan.
Edurack
October 21, 2026
Kinetic Theory of Gases is a lighter-weight chapter in JEE Main Physics: it ranks #17 of 20, so it adds a few questions rather than a block of them. Here is what five years of JEE Main questions say about it, and how to prepare.
At a glance
- 87 questions across 2022–2026, all shifts
- 3.0% of Physics over five years and 3.0% in 2024–2026
- Rank #17 of 20 Physics chapters by recent weight
- Momentum: Stable
- Asked in 5 of 5 years; busiest year 2022 with 21 questions
- 18 questions in the 2026 papers
Year-wise questions
| Year | 2022 | 2023 | 2024 | 2025 | 2026 | Total |
|---|---|---|---|---|---|---|
| Questions | 21 | 19 | 17 | 12 | 18 | 87 |
How Kinetic Theory of Gases compares inside Physics
| Rank | Chapter | Total Qs | 2024–26 share | Momentum |
|---|---|---|---|---|
| 15 | Laws of Motion | 121 | 3.5% | Fading |
| 16 | Work, Energy and Power | 110 | 3.5% | Stable |
| 17 | Kinetic Theory of Gases | 87 | 3.0% | Stable |
| 18 | Gravitation | 100 | 2.8% | Fading |
| 19 | Electromagnetic Waves | 85 | 2.5% | Fading |
Concepts that repeat
These specific ideas came back most often inside Kinetic Theory of Gases.
| Concept | 2022 | 2023 | 2024 | 2025 | 2026 | Total |
|---|---|---|---|---|---|---|
| Various Types of Speeds of Ideal Gases | 4 | 7 | 7 | 2 | 2 | 22 |
Start your practice with these. Each one has appeared in every one of the five years, so it is worth knowing the question styles.
What the syllabus covers
Equation of state of a perfect gas, kinetic theory assumptions and pressure, kinetic interpretation of temperature, RMS speed, degrees of freedom, law of equipartition, specific heats, mean free path, Avogadro's number.
A checklist to tick off:
- Equation of state of a perfect gas
- Kinetic theory assumptions and pressure
- Kinetic interpretation of temperature
- RMS speed
- Degrees of freedom
- Law of equipartition
- Specific heats
- Mean free path
- Avogadro's number
What to focus on
RMS, mean and most probable speeds, degrees of freedom, the equipartition theorem and the specific heat ratio.
A study plan for this chapter
Treat it as a dependable source of marks and keep it in your regular revision cycle. If you divide your Physics time in proportion to recent weightage, this chapter earns about 3% of it.
- Day 1–2: a fast pass over theory and the standard results.
- Day 3: chapter-wise PYQs, then log the mistakes.
- Ongoing: a quick look before each mock test.
Keep reading
- The full ranking: JEE Main Physics chapter-wise weightage
- Next chapter by weight: Gravitation
- A heavier neighbour: Work, Energy and Power
See Kinetic Theory of Gases on the weightage page →
Frequently Asked Questions
How many questions has Kinetic Theory of Gases had in JEE Main?
87 questions across 2022–2026, counting every shift: 2022: 21, 2023: 19, 2024: 17, 2025: 12, 2026: 18.
Is Kinetic Theory of Gases important for JEE Main Physics?
It ranks #17 of 20 Physics chapters by recent weight, which puts it in tier 3 of 3 for preparation. Its momentum is labelled Stable.
How should I start Kinetic Theory of Gases?
RMS, mean and most probable speeds, degrees of freedom, the equipartition theorem and the specific heat ratio. Then solve chapter-wise previous-year questions.