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Friday, 9 October

JEE Main Physics · Class 11

Kinetic Theory: JEE Main previous year questions

Kinetic Theory had 28 questions in the 42 JEE Main shifts Lumi analysed, about 0.7 a shift, asked in 28 of 42 shifts. It ranks 25 of 29 Physics chapters by questions; 0% of its questions were hard.

Questions
28
in 28 of 42 shifts
A shift, on average
0.7
of 25 Physics questions
Since 2024
-0.2
0.8 a shift in 2017–23, 0.5 in 2024–26
Numerical answer
3
11% of its questions

Year by year

How often it came

Questions in the analysed shifts of each year. Years differ in how many shifts Lumi analysed, so read the bars with the shift count.

Questions each year
0361’174’202’213’224’235’245’254’26

2017: 1 shifts · 2020: 4 shifts · 2021: 4 shifts · 2022: 4 shifts · 2023: 4 shifts · 2024: 8 shifts · 2025: 8 shifts · 2026: 9 shifts

Difficulty by year
  • 20171
  • 20204
  • 20212
  • 20223
  • 20234
  • 20245
  • 20255
  • 20264
  • Easy
  • Medium
  • Hard

Inside the chapter

Topics and the ideas that repeat

2 topics and 14 distinct ideas; 5 ideas were asked more than once. Most questions are single correct and calculation.

Topics, by questions

1 questions had no close topic in our taxonomy and are counted for the chapter only.

Ideas asked most
5 repeat

Study it on Lumi

Kinetic Theory: the interactive lesson

Every question

All 28 Kinetic Theory questions

Newest first. Each opens with its options and the official answer.

2026 4 questions

  1. 2 Apr 2026, Shift 2 · Q34A mixture of carbon dioxide and oxygen has volume 8310 cm3^3, temperature 300 K, pressure 100 kPa and mass 13.2 g. The number of moles of…MediumSingle correct
  2. 4 Apr 2026, Shift 1 · Q35One gas of n1n_1 mole of molecules at temperature T1T_1, volume V1V_1, and pressure P1P_1, and another gas of n2n_2 mole of molecules at…MediumSingle correct
  3. 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
  4. 6 Apr 2026, Shift 1 · Q35Two closed vessels of same volume are joined through a narrow tube and both vessels are filled with air of pressure 90 kPa and temperature…MediumSingle correct

2025 5 questions

  1. 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
  2. 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
  3. 3 Apr 2025, Shift 2 · Q34Pressure of an ideal gas, contained in a closed vessel, is increased by 0.4% when heated by 1∘1^\circC. Its initial temperature must be:MediumSingle correct
  4. 4 Apr 2025, Shift 2 · Q45There are two vessels filled with an ideal gas where volume of one is double the volume of other. The large vessel contains the gas at 8…MediumSingle correct
  5. 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

2024 5 questions

  1. 6 Apr 2024, Shift 2 · Q41Energy of 10 non rigid diatomic molecules at temperature TT is :MediumSingle correct
  2. 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
  3. 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
  4. 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
  5. 31 Jan 2024, Shift 1 · Q39The parameter that remains the same for molecules of all gases at a given temperature is :EasySingle correct

2023 4 questions

  1. 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
  2. 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
  3. 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
  4. 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

2022 3 questions

  1. 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
  2. 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
  3. 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

2021 2 questions

  1. 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
  2. 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

2020 4 questions

  1. 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
  2. 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
  3. 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
  4. 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

2017 1 questions

  1. 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

Pattern: Asked most years.