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Saturday, 31 October

JEE Main · Physics · Kinetic Theory

Internal Energy of Gas Mixtures

JEE Main asked Internal Energy of Gas Mixtures 7 times in 7 of the 108 shifts Lumi analysed, in 2020, 2021, 2022, 2023 and 2024. It belongs to Kinetic Theory of Gases, in Kinetic Theory (Physics). The longest wait between two years asking it was 1 year. In 2020 and 2024 it came in more than one shift of the same year.

Updated 2026-10-24

Times asked
7
in 7 shifts
Years
5 of 8
First asked
2020
last in 2024
Pattern
Asked most years
across the analysed shifts

Questions on this idea a shift, by year

2017–2026. Asked in 2020, 2021, 2022, 2023 and 2024. Years differ in how many shifts Lumi analysed, so each year is scaled to one shift of 25 Physics questions.

00.10.20’170.17’200.03’210.03’220.07’230.09’240’250’26

Raw count: 2017: 0 in 1 shift · 2020: 2 in 12 shifts · 2021: 1 in 24 shifts · 2022: 1 in 24 shifts · 2023: 1 in 12 shifts · 2024: 2 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.

  • 20260 of 9
  • 20250 of 8
  • 20242 of 18
  • 20231 of 12
  • 20221 of 24
  • 20211 of 24
  • 20202 of 12
  • 20170 of 1

Asked in that shift More than once Not asked

How JEE Main framed it

Single correct is the usual form. Skill tested: calculation.

  • Internal energy of gas mixture
  • Molar specific heat of gas mixture

Difficulty

Easy 5Medium 2Hard 0

2 of the 7 questions had a numerical answer.

Every question

All 7 questions

From the official JEE Main shift papers, newest first. Open one for the full question, the options and the official answer.

  1. 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
  2. 1 Feb 2024, Shift 1 · Q39Two moles a monoatomic gas is mixed with six moles of a diatomic gas. The molar specific heat of the mixture at constant volume is :EasySingle correct
  3. 10 Apr 2023, Shift 2 · Q33A gas mixture consists of 2 moles of oxygen and 4 moles of neon at temperature T. Neglecting all vibrational modes, the total internal…EasySingle correct
  4. 29 Jul 2022, Shift 1 · Q54One mole of a monoatomic gas is mixed with three moles of a diatomic gas. The molecular specific heat of mixture at constant volume is…MediumNumerical value
  5. 17 Mar 2021, Shift 1 · Q15Two ideal polyatomic gases at temperatures T1T_1 and T2T_2 are mixed so that there is no loss of energy. If F1F_1 and F2F_2, m1m_1 and…MediumSingle correct
  6. 4 Sep 2020, Shift 1 · Q23A closed vessel contains 0.1 mole of a monatomic ideal gas at 200 K. If 0.05 mole of the same gas at 400 K is added to it, the final…EasyNumerical value
  7. 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

Shifts: 2 Sep 2020, Shift 1, 4 Sep 2020, Shift 1, 17 Mar 2021, Shift 1, 29 Jul 2022, Shift 1, 10 Apr 2023, Shift 2, 31 Jan 2024, Shift 2, 1 Feb 2024, Shift 1.

Same topic

Other ideas in Kinetic Theory of Gases

Kinetic Theory of Gases has 22 ideas JEE Main has asked; 14 of them came up in more than one question. The 12 most asked are below.

Topic analysisChapter analysisStudy this chapterAll repeated ideas