Chemistry - Thermodynamics (C)
Practise 8 IAT (IISER) previous year questions on Thermodynamics (C), compiled from papers spanning 2017 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 IAT (IISER) tests.
Thermodynamics (C) has been asked in 7 of the 9 years of IAT (IISER) papers analysed (2017–2026), with 8 questions in all. 25% of them were easy, 75% moderate and 0% tough. Most of its questions came from 2026, with 1 question that year. In the last three years (2023–2026) it had 3 questions across 3 papers, about 1 per paper.
The chapter's 3 topics are not weighted equally: First Law and Basic Fundamentals of Thermodynamics (4 questions, 50%), Laws of Thermochemistry and Enthalpy Change (2 questions, 25%), and Third law of thermodynamics (2 questions, 25%) have been asked the most. First Law and Basic Fundamentals of Thermodynamics has also led over the last five years, with 2 questions.
- 1An ideal gas goes through a reversible isothermal expansion (solid line) followed by a reversible adiabatic expansion (dashed line). Which o2026First Law and Basic Fundamentals of Thermodynamics
- 2The work done when one mole of an ideal gas expands at constant temperature from volume to (in two equal steps of volume in a linear fashion2025First Law and Basic Fundamentals of Thermodynamics
- 3Consider an exothermic reaction: The correct statement about the reaction is2024Third law of thermodynamics
- 4Consider the following reaction: Which of the statements is FALSE?2023Laws of Thermochemistry and Enthalpy Change
- 5What is the correct relation between the heat capacity at constant volume and heat capacity at constant pressure for an ideal gas? Universal2020First Law and Basic Fundamentals of Thermodynamics
- 6At of is dissociated to . What is the standard Gibbs change at and 1 atm pressure for this process?2019Third law of thermodynamics
- 7The heat of neutralization of the following reaction is \(-57.1 {~kJ} {~mol}^{-1}\). \( {NaOH}( {aq})+ {HCl}( {aq}) {NaCl}( {aq})+ {H}_2 {O}2018Laws of Thermochemistry and Enthalpy Change
- 8The magnitude of reversible work done by an ideal gas in four different processes: isothermal expansion, adiabatic expansion, constant press2017First Law and Basic Fundamentals of Thermodynamics
Frequently Asked Questions
1.How many questions are available for Thermodynamics (C)?
This chapter includes 8 questions compiled from IAT (IISER) papers spanning 2017 to 2026.
2.Are these questions only from IAT (IISER), or from other exams too?
These are IAT (IISER) questions specifically for the Thermodynamics (C) chapter. Questions from other exams like JEE Main or NTA Abhyas (JEE Main) are organised separately under their respective exam sections.
3.Is Thermodynamics (C) an important chapter for IAT (IISER) Chemistry?
Thermodynamics (C) has appeared in 8 of the 10 years of IAT (IISER) papers covered here, with 8 questions across 8 papers - about one per paper it appears in.
4.What is the difficulty level of Thermodynamics (C) questions in IAT (IISER)?
Of the 8 questions analysed for this chapter, 25% are easy, 75% moderate and 0% tough. 2026 had the most, with 1 question.
5.Which topics in Thermodynamics (C) should I focus on?
These topics have carried the most weightage in Thermodynamics (C):
- First Law and Basic Fundamentals of Thermodynamics - 4 questions (50%)
- Laws of Thermochemistry and Enthalpy Change - 2 questions (25%)
- Third law of thermodynamics - 2 questions (25%)
6.Is Thermodynamics (C)'s weightage in IAT (IISER) going up or down?
Across all 8 papers analysed, Thermodynamics (C) has averaged about 1.0 questions per paper. In the last three years (2023–2026), that average has stayed about the same, at about 1.0 questions per paper. Use the year-wise numbers on this page for the exact trend before you decide how much time to give it.