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Saturday, 31 October

JEE Main 2022 · PhysicsMultiple choiceOtherEasyConceptual

JEE Main 25 July 2022, Shift 1, Physics Q38

Question 38 of 90 in this shift, Physics question 8 of 30, Section A.

Following statements are given : (A) The average kinetic energy of a gas molecule decreases when the temperature is reduced. (B) The average kinetic energy of a gas molecule increases with increase in pressure at constant temperature. (C) The average kinetic energy of a gas molecule decreases with increase in volume. (D) Pressure of a gas increases with increase in temperature at constant pressure. (E) The volume of gas decreases with increase in temperature. Choose the correct answer from the options given below :
  1. (1)(A) and (D) onlyOfficial answer
  2. (2)(A), (B) and (D) only
  3. (3)(B) and (D) only
  4. (4)(A), (B) and (E) only

Official answer

Option 1

NTA final key (2022 Session 2).

Chapter
Kinetic Theory
Topic
Kinetic Theory of Gases
Idea tested
Kinetic Energy and Temp

Same idea in other shifts

Asked 11× in all
  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. 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
  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. 27 Jan 2024, Shift 1 · Q39The average kinetic energy of a monoatomic molecule is 0.414 eV at temperature : (Use KB=1.38×10−23K_B = 1.38\times10^{-23} J/mol-K)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
  6. 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
  7. 15 Apr 2023, Shift 1 · Q32A flask contains Hydrogen and Argon in the ratio 2:1 by mass. The temperature of the mixture is 30°C. The ratio of average kinetic energy…EasySingle correct
  8. 25 Feb 2021, Shift 1 · Q21A monoatomic gas of mass 4.0 u is kept in an insulated container. Container is moving with velocity 30 m/s. If container is suddenly…MediumNumerical value

Question text from the official JEE Main paper published by NTA; answer from the final answer key. Chapter, topic and idea tags, difficulty and skill are Lumi’s. Lumi analyses 108 of the 174 JEE Main shifts held from 2017 to 2026.