JEE Main · Chemistry · Thermodynamics (Chemistry)
Free Expansion of Ideal Gas
JEE Main asked Free Expansion of Ideal Gas 2 times in 2 of the 108 shifts Lumi analysed, in 2022 and 2024. It belongs to Thermodynamic Processes, in Thermodynamics (Chemistry) (Chemistry). The longest wait between two years asking it was 2 years.
Updated 2026-10-24
- Times asked
- 2
- in 2 shifts
- Years
- 2 of 8
- First asked
- 2022
- last in 2024
- Pattern
- Occasional
- across the analysed shifts
Questions on this idea a shift, by year
2017–2026. Asked in 2022 and 2024. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Chemistry questions.
Raw count: 2017: 0 in 1 shift · 2020: 0 in 12 shifts · 2021: 0 in 24 shifts · 2022: 1 in 24 shifts · 2023: 0 in 12 shifts · 2024: 1 in 18 shifts · 2025: 0 in 8 shifts · 2026: 0 in 9 shifts.
Shift by shift
Each square is one analysed shift, in date order. Open a filled one for that paper.
How JEE Main framed it
Numerical value is the usual form. Skill tested: conceptual.
- Thermodynamic quantities for free expansion
- Heat absorbed in free expansion
Difficulty
1 of the 2 questions had a numerical answer.
Every question
All 2 questions
From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.
- 1 Feb 2024, Shift 1 · Q63Choose the correct option for free expansion of an ideal gas under adiabatic condition from the following :EasySingle correct
- 28 Jun 2022, Shift 1 · Q844.0 L of an ideal gas is allowed to expand isothermally into vacuum until the total volume is 20 L. The amount of heat absorbed in this…EasyNumerical value
Shifts: 28 Jun 2022, Shift 1, 1 Feb 2024, Shift 1.
Same topic
Other ideas in Thermodynamic Processes
Thermodynamic Processes has 16 ideas JEE Main has asked; 8 of them came up in more than one question. The 12 most asked are below.
- Adiabatic Process Analysis16× · 2026
- Cyclic Process Work7× · 2025
- Adiabatic T-V and P-T Relations5× · 2024
- Polytropic Process Analysis5× · 2024
- Isobaric Process Analysis3× · 2025
- Isothermal Process Analysis3× · 2025
- Indicator Diagram Conversions3× · 2021
- Heat Fractions in Isobaric Processesonce · 2026
- Work Comparison in Gas Compressionsonce · 2026
- Isochoric Process Analysisonce · 2024
- P-V Curve Slopesonce · 2024
- Adiabatic Work Evaluationonce · 2022