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Chemistry - States of Matter

Practise 21 JEE Advanced previous year questions on States of Matter, compiled from papers spanning 2006 to 2026. Each question is pulled directly from the actual exam paper it appeared in, so you're practising in the exact style and difficulty JEE Advanced tests.

States of Matter has been asked in 17 of the 27 years of JEE Advanced papers analysed (2000–2026), with 21 questions in all. 48% of them were easy, 33% moderate and 19% tough. Most of its questions came from 2014, with 3 questions that year. In the last three years (2024–2026) it had 3 questions across 6 papers, about 0.5 per paper.

The chapter's 4 topics are not weighted equally: Real Gases and Van der Waal's Equation (8 questions, 38%), Kinetic theory of gases (6 questions, 29%), and Gas laws and Ideal Gas Equation (4 questions, 19%) have been asked the most. Real Gases and Van der Waal's Equation has also led over the last five years, with 2 questions. Kinetic theory of gases has produced the most tough questions (2).

  1. 1Two cylinders, both fitted with frictionless pistons, are filled with mixtures of He and Ar gases. In the first cylinder, the masses of He a2026 (Paper 1)Gas laws and Ideal Gas Equation
  2. 2Molar volume of a van der Waals gas can be calculated by expressing the van der Waals equation as a cubic equation with as the variable. The2025 (Paper 1)Real Gases and Van der Waal's Equation
  3. 3A closed vessel contains of an ideal gas at , which exerts 2 atm pressure. At the same temperature, of another ideal gas is added to it and 2024 (Paper 1)Kinetic theory of gases
  4. 4A gas has a compressibility factor of 0 . 5 and a molar volume of 0 . 4 dm 3 mol - 1 at a temperature of 800 K and pressure x atm . If it sh2023 (Paper 1)Real Gases and Van der Waal's Equation
  5. 5If the distribution of molecular speeds of a gas is as per the figure shown below, then the ratio of the most probable, the average, and the2020 (Paper 1)Kinetic theory of gases
  6. 6Which of the following statement(s) (are) correct regarding the root mean square speed U r m s and average translational kinetic energy a v 2019 (Paper 1)Kinetic theory of gases
  7. 7A closed tank has two compartments A and B , both filled with oxygen (assumed to be ideal gas). The partition separating the two compartment2018 (Paper 1)Mixture of gases
  8. 8An ideal gas is expanded from ( p 1 , V 1 , T 1 ) to ( p 2 , V 2 , T 2 ) under different conditions. The correct statement(s) among the foll2017 (Paper 1)Gas laws and Ideal Gas Equation
  9. 9The diffusion coefficient of an ideal gas is proportional to its mean free path and mean speed. The absolute temperature of an ideal gas is 2016 (Paper 1)Kinetic theory of gases
  10. 10One mole of a monoatomic real gas satisfied the equation p V - b = R T where b is a constant. The relationship of interatomic potential V(r)2015 (Paper 2)Real Gases and Van der Waal's Equation
  11. 11If the value of Avogadro number is 6.023 10 23 m o l 1 and the value of Boltzmann constant is 1.380 10 - 23 J K - 1 , then the number of sig2014 (Paper 1)Gas laws and Ideal Gas Equation
  12. 12Paragraph: and are two volatile liquids with molar weights of and respectively. Two cotton plugs, one soaked in and the other soaked in , ar2014 (Paper 2)Mixture of gases
  13. 13Paragraph: and are two volatile liquids with molar weights of and respectively. Two cotton plugs, one soaked in and the other soaked in , ar2014 (Paper 2)Mixture of gases
  14. 14For one mole of a van der Waal's gas when and , the PV vs, plot is shown below. The value of the van der Waal's constant (atm. liter ) is :2012 (Paper 1)Real Gases and Van der Waal's Equation
  15. 15According to kinetic theory of gases2011 (Paper 1)Kinetic theory of gases
  16. 16To an evacuated vessel with movable piston under external pressure of , mole of He and mole of an unknown compound (vapour pressure at ) are2011 (Paper 1)Gas laws and Ideal Gas Equation
  17. 17The term that corrects for the attractive forces present in a real gas in the van der Waals' equation is2009 (Paper 1)Real Gases and Van der Waal's Equation
  18. 18At , the root mean square (rms) speed of a gas (molecular weight ) is equal to the most probable speed of gas at . The molecular weight of t2009 (Paper 2)Kinetic theory of gases
  19. 19A gas described by van der Waals' equation2008 (Paper 1)Real Gases and Van der Waal's Equation
  20. 20Match the gases under specified conditions listed in Column I with their properties/laws in Column II. Indicate your answer by darkening the2007 (Paper 1)Real Gases and Van der Waal's Equation
  21. 21The given graph represent the variations of compressibility factor versus , for three real gases and . Identify the only incorrect statement2006Real Gases and Van der Waal's Equation

Frequently Asked Questions

1.How many questions are available for States of Matter?

This chapter includes 21 questions compiled from JEE Advanced papers spanning 2006 to 2026.

2.Are these questions only from JEE Advanced, or from other exams too?

These are JEE Advanced questions specifically for the States of Matter chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.

3.Is States of Matter an important chapter for JEE Advanced Chemistry?

States of Matter has appeared in 17 of the 21 years of JEE Advanced papers covered here, with 21 questions across 19 papers - about one per paper it appears in.

4.What is the difficulty level of States of Matter questions in JEE Advanced?

Of the 21 questions analysed for this chapter, 48% are easy, 33% moderate and 19% tough. 2014 had the most, with 3 questions.

5.Which topics in States of Matter should I focus on?

These topics have carried the most weightage in States of Matter:

  • Real Gases and Van der Waal's Equation - 8 questions (38%)
  • Kinetic theory of gases - 6 questions (29%)
  • Gas laws and Ideal Gas Equation - 4 questions (19%)
  • Kinetic theory of gases has produced the most tough questions (2).
6.Is States of Matter's weightage in JEE Advanced going up or down?

Across all 19 papers analysed, States of Matter has averaged about 1.1 questions per paper. In the last three years (2024–2026), that average has fallen, at about 0.5 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.