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Friday, 9 October

JEE Main Chemistry · States of Matter

Ideal Gas Laws in JEE Main

Ideal Gas Laws (Chemistry, States of Matter) came 10 times in 10 of the 42 JEE Main shifts Lumi analysed, across 8 distinct ideas. 5 of them came in 2024–26; it was last asked in 2026.

Questions
10
in 10 shifts
Ideas asked
8
2 asked more than once
Numerical answer
4
40% of its questions
Pattern
Asked most years
last asked 2026
Questions each year
0240’171’202’212’220’230’243’252’26

In the shifts Lumi analysed for each year.

Difficulty and format
Easy 2Medium 8Hard 0

Format

  • Single correct5 Q
  • Numerical value4 Q
  • Diagram based1 Q
Ideas inside the topic
8 ideas
Where it sits

Part of States of Matter, which had 8 questions in all. Ideal Gas Laws accounts for 125% of them. In Lumi's JEE taxonomy it belongs to Physical Chemistry.

Some questions sit in other chapters too: Kinetic Theory, Some Basic Concepts of Chemistry.

Every question

All 10 Ideal Gas Laws questions

Newest first, each with its options and official answer.

  1. 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
  2. 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
  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 1 · Q51At the sea level, the dry air mass percentage composition is given as nitrogen gas: 70.0, oxygen gas: 27.0 and argon gas: 3.0. If total…MediumSingle correct
  6. 25 Jul 2022, Shift 1 · Q83The pressure of a moist gas at 27∘27^\circC is 44 atm. The volume of the container is doubled at the same temperature. The new pressure of…MediumNumerical value
  7. 29 Jun 2022, Shift 1 · Q81Geraniol, a volatile organic compound, is a component of rose oil. The density of the vapour is 0.46 gL−10.46\ \mathrm{gL^{-1}} at…MediumNumerical value
  8. 3 Aug 2021, Shift 2 · Q52The total kinetic energy of 10 moles of a monoatomic ideal gas at 25°C in kJ is ‾\underline{\hspace{2em}}. (Nearest integer) [R = 8.314 J…EasyNumerical value
  9. 25 Jul 2021, Shift 1 · Q52A home owner uses 4.00×103 m34.00\times10^3\ \mathrm{m^3} of methane (CH4\mathrm{CH_4}) gas, (assume CH4\mathrm{CH_4} is an ideal gas) in a year to…EasyNumerical value
  10. 2 Sep 2020, Shift 1 · Q31Which one of the following graphs is not correct for ideal gas ? dd = Density, PP = Pressure, TT = TemperatureMediumDiagram basedHas a figure