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Friday, 9 October

JEE Main Physics · Thermodynamics

Thermodynamic Processes in JEE Main

Thermodynamic Processes (Physics, Thermodynamics) came 21 times in 20 of the 42 JEE Main shifts Lumi analysed, across 9 distinct ideas. 15 of them came in 2024–26; it was last asked in 2026.

Questions
21
in 20 shifts
Ideas asked
9
4 asked more than once
Numerical answer
3
14% of its questions
Pattern
Asked most years
last asked 2026
Questions each year
0480’173’202’211’220’235’247’253’26

In the shifts Lumi analysed for each year.

Difficulty and format
Easy 8Medium 11Hard 2

Format

  • Single correct14 Q
  • Numerical value3 Q
  • Match the list2 Q
  • Other1 Q
  • Diagram based1 Q
Ideas inside the topic
9 ideas
Where it sits

Part of Thermodynamics, which had 48 questions in all. Thermodynamic Processes accounts for 44% of them. In Lumi's JEE taxonomy it belongs to Thermodynamics.

Some questions sit in other chapters too: Thermodynamics (Chemistry), Thermal Properties of Matter.

Every question

All 21 Thermodynamic Processes questions

Newest first, each with its options and official answer.

  1. 2 Apr 2026, Shift 1 · Q33Heat is supplied to a diatomic gas at constant pressure. Then the ratio of ΔQ:ΔU:ΔW\Delta Q : \Delta U : \Delta W is ______.EasySingle correct
  2. 6 Apr 2026, Shift 1 · Q55Arrange the following isothermal processes in order of the magnitude of the work (p −- V) involved between states 1 and 2. A. Expansion…MediumSingle correct
  3. 6 Apr 2026, Shift 2 · Q30A cylinder with adiabatic walls is closed at both ends and is divided into two compartments by a frictionless adiabatic piston. Ideal gas…HardSingle correct
  4. 2 Apr 2025, Shift 1 · Q31In an adiabatic process, which of the following statements is true ?EasySingle correct
  5. 2 Apr 2025, Shift 2 · Q32Identify the characteristics of an adiabatic process in a monoatomic gas. (A) Internal energy is constant. (B) Work done in the process is…MediumOther
  6. 3 Apr 2025, Shift 2 · Q33An ideal gas exists in a state with pressure P0\mathrm{P_0}, volume V0\mathrm{V_0}. It is isothermally expanded to 4 times of its initial…MediumSingle correct
  7. 4 Apr 2025, Shift 2 · Q33Match List - I with List - II. List - I List - II (A) Isobaric (I) ΔQ=ΔW\Delta Q=\Delta W (B) Isochoric (II) ΔQ=ΔU\Delta Q=\Delta U (C)…EasyMatch the list
  8. 7 Apr 2025, Shift 1 · Q48An ideal gas has undergone through the cyclic process as shown in the figure. Work done by the gas in the entire cycle is _______…MediumNumerical valueHas a figure
  9. 7 Apr 2025, Shift 2 · Q34Match List - I with List - II. List - I | List - II (A) Isothermal | (I) ΔW\Delta W (work done) =0=0 (B) Adiabatic | (II) ΔQ\Delta Q…EasyMatch the list
  10. 8 Apr 2025, Shift 2 · Q33A monoatomic gas having γ=53\gamma = \frac{5}{3} is stored in a thermally insulated container and the gas is suddenly compressed to…EasySingle correct
  11. 9 Apr 2024, Shift 1 · Q38A sample of 11 mole gas at temperature T is adiabatically expanded to double its volume. If adiabatic constant for the gas is…MediumSingle correct
  12. 9 Apr 2024, Shift 1 · Q39The volume of an ideal gas (γ=1.5\gamma=1.5) is changed adiabatically from 55 litres to 44 litres. The ratio of initial pressure to final…EasySingle correct
  13. 9 Apr 2024, Shift 2 · Q36A real gas within a closed chamber at 27∘C27^\circ C undergoes the cyclic process as shown in figure. The gas obeys PV3=RTPV^3=RT equation for…HardSingle correctHas a figure
  14. 30 Jan 2024, Shift 2 · Q38Choose the correct statement for processes AA & BB shown in figure.MediumSingle correctHas a figure
  15. 31 Jan 2024, Shift 1 · Q38The given figure represents two isobaric processes for the same mass of an ideal gas, thenEasySingle correctHas a figure
  16. 25 Jul 2022, Shift 1 · Q37A certain amount of gas of volume VV at 27∘27^\circC temperature and pressure 2×107 Nm−22\times10^{7}\ \mathrm{Nm^{-2}} expands isothermally until…MediumSingle correct
  17. 25 Jul 2021, Shift 1 · Q20A monoatomic ideal gas, initially at temperature T1T_1 is enclosed in a cylinder fitted with a frictionless piston. The gas is allowed to…EasySingle correct
  18. 18 Mar 2021, Shift 1 · Q4The P-V diagram of a diatomic ideal gas system going under cyclic process as shown in figure. The work done during an adiabatic process CD…MediumSingle correctHas a figure
  19. 8 Jan 2020, Shift 1 · Q8A thermodynamic cycle xyzxxyzx is shown on a V-T diagram. The P-V diagram that best describes this cycle is : (Diagrams are schematic and…MediumDiagram basedHas a figure
  20. 9 Jan 2020, Shift 2 · Q21Starting at temperature 300 K, one mole of an ideal diatomic gas (γ=1.4\gamma = 1.4) is first compressed adiabatically from volume V1V_1 to…MediumNumerical value
  21. 2 Sep 2020, Shift 1 · Q22An engine takes in 5 moles of air at 20∘20^\circC and 1 atm, and compresses it adiabaticaly to 1/10th1/10^{\mathrm{th}} of the original volume.…MediumNumerical value