Learn

Friday, 9 October

JEE Main Physics · Kinetic Theory

Kinetic Theory of Gases in JEE Main

Kinetic Theory of Gases (Physics, Kinetic Theory) came 29 times in 28 of the 42 JEE Main shifts Lumi analysed, across 16 distinct ideas. 13 of them came in 2024–26; it was last asked in 2026.

Questions
29
in 28 shifts
Ideas asked
16
6 asked more than once
Numerical answer
3
10% of its questions
Pattern
Asked most years
last asked 2026
Questions each year
0481’174’202’214’225’237’244’252’26

In the shifts Lumi analysed for each year.

Difficulty and format
Easy 17Medium 12Hard 0

Format

  • Single correct19 Q
  • Numerical value3 Q
  • Assertion–reason2 Q
  • Two statements2 Q
  • Match the list1 Q
  • Other1 Q
  • Diagram based1 Q
Ideas inside the topic
16 ideas
Where it sits

Part of Kinetic Theory, which had 28 questions in all. Kinetic Theory of Gases accounts for 104% of them. In Lumi's JEE taxonomy it belongs to Thermodynamics.

Some questions sit in other chapters too: Gravitation, Thermodynamics, Units and Measurements.

Every question

All 29 Kinetic Theory of Gases questions

Newest first, each with its options and official answer.

  1. 4 Apr 2026, Shift 2 · Q33Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Assertion A: If the average kinetic…EasyAssertion–reason
  2. 5 Apr 2026, Shift 1 · Q32Given below are two statements: one is labelled as Assertion A and the other is labelled as Reason R Statement I: Change in internal…MediumTwo statements
  3. 2 Apr 2025, Shift 1 · Q48γA\gamma_A is the specific heat ratio of monoatomic gas A having 3 translational degrees of freedom. γB\gamma_B is the specific heat ratio…MediumNumerical value
  4. 2 Apr 2025, Shift 2 · Q50The internal energy of air in 4 m×4 m×3 m4\ \mathrm{m}\times4\ \mathrm{m}\times3\ \mathrm{m} sized room at 1 atmospheric pressure will be…EasyNumerical value
  5. 7 Apr 2025, Shift 1 · Q33Match the LIST-I with LIST-I LIST-I | LIST-II A. Triatomic rigid gas | I. CpCv=53\frac{C_p}{C_v} = \frac{5}{3} B. Diatomic non-rigid gas | II.…MediumMatch the list
  6. 7 Apr 2025, Shift 2 · Q33The helium and argon are put in the flask at the same room temperature (300 K). The ratio of average kinetic energies (per molecule) of…EasySingle correct
  7. 6 Apr 2024, Shift 2 · Q41Energy of 10 non rigid diatomic molecules at temperature TT is :MediumSingle correct
  8. 8 Apr 2024, Shift 1 · Q39A mixture of one mole of monoatomic gas and one mole of a diatomic gas (rigid) are kept at room temperature (27∘27^\circC). The ratio of…EasySingle correct
  9. 9 Apr 2024, Shift 2 · Q41The temperature of a gas is −78∘-78^\circC and the average translational kinetic energy of its molecules is K. The temperature at which the…EasySingle correct
  10. 29 Jan 2024, Shift 1 · Q39Two vessels A and B are of the same size and are at same temperature. A contains 1g of hydrogen and B contains 1g of oxygen. PAP_A and…EasySingle correct
  11. 30 Jan 2024, Shift 2 · Q39If three moles of monoatomic gas (γ=53)\left(\gamma = \frac{5}{3}\right) is mixed with two moles of a diatomic gas…MediumSingle correct
  12. 31 Jan 2024, Shift 1 · Q39The parameter that remains the same for molecules of all gases at a given temperature is :EasySingle correct
  13. 31 Jan 2024, Shift 2 · Q39A gas mixture consists of 8 moles of argon and 6 moles of oxygen at temperature T. Neglecting all vibrational modes, the total internal…EasySingle correct
  14. 6 Apr 2023, Shift 1 · Q45The number of air molecules per cm3\mathrm{cm^3} increased from 3×10193\times10^{19} to 12×101912\times10^{19}. The ratio of collision frequency of…EasySingle correct
  15. 6 Apr 2023, Shift 1 · Q49Given below are two statements : one is labelled as Assertion A and the other is labelled as Reason R. Assertion A : Earth has atmosphere…EasyAssertion–reason
  16. 8 Apr 2023, Shift 2 · Q33The temperature at which the kinetic energy of oxygen molecules becomes double than its value at 27∘27^\circC isEasySingle correct
  17. 11 Apr 2023, Shift 1 · Q43Three vessels of equal volume contain gases at the same temperature and pressure. The first vessel contains neon (monoatomic), the second…EasySingle correct
  18. 13 Apr 2023, Shift 2 · Q39The mean free path of molecules of a certain gas at STP is 1500d1500d, where dd is the diameter of the gas molecules. While maintaining the…MediumSingle correct
  19. 25 Jul 2022, Shift 1 · Q38Following statements are given : (A) The average kinetic energy of a gas molecule decreases when the temperature is reduced. (B) The…EasyOther
  20. 28 Jul 2022, Shift 1 · Q38Given below are two statements : Statement I : The average momentum of a molecule in a sample of an ideal gas depends on temperature.…MediumTwo statements
  21. 24 Jun 2022, Shift 1 · Q510.056 kg of Nitrogen is enclosed in a vessel at a temperature of 127∘127^\circC. The amount of heat required to double the speed of its…MediumNumerical value
  22. 29 Jun 2022, Shift 1 · Q42In van dar Wall equation [P+aV2][V−b]=RT\left[P + \frac{a}{V^2}\right][V - b] = RT; P is pressure, V is volume, R is universal gas constant and T is…EasySingle correct
  23. 16 Mar 2021, Shift 2 · Q7Calculate the value of mean free path (λ\lambda) for oxygen molecules at temperature 27∘C27^\circ\mathrm{C} and pressure 1.01×1051.01\times10^5…EasySingle correct
  24. 18 Mar 2021, Shift 1 · Q17What will be the average value of energy along one degree of freedom for an ideal gas in thermal equilibrium at a temperature T ? (kBk_B…EasySingle correct
  25. 8 Jan 2020, Shift 1 · Q9The plot that depicts the behavior of the mean free time τ\tau (time between two successive collisions) for the molecules of an ideal…MediumDiagram basedHas a figure
  26. 9 Jan 2020, Shift 2 · Q10Two gases - argon (atomic radius 0.07 nm, atomic weight 40) and xenon (atomic radius 0.1 nm, atomic weight 140) have the same number…MediumSingle correct
  27. 2 Sep 2020, Shift 1 · Q9A gas mixture consists of 3 moles of oxygen and 5 moles of argon at temperature TT. Assuming the gases to be ideal and the oxygen bond to…EasySingle correct
  28. 6 Sep 2020, Shift 2 · Q9In a dilute gas at pressure P and temperature T, the mean time between successive collisions of a molecule varies with T as :MediumSingle correct
  29. 2 Apr 2017 (offline) · Q11The temperature of an open room of volume 30 m330\ \mathrm{m^3} increases from 17∘17^\circC to 27∘27^\circC due to the sunshine. The…MediumSingle correct