Physics · JEE

Important Questions: Thermodynamics for JEE

36+ syllabus-aligned questions available

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The most important Thermodynamics questions for JEE cover conceptual traps, standard results, and numerical patterns from Thermal equilibrium and the concept of temperature, zeroth law of thermodynamics, Heat, work and internal energy, The first law of thermodynamics, isothermal and adiabatic processes, The second law of thermodynamics: reversible and irreversible processes. Goodmarks provides 36+ high-yield MCQs with full solutions.

Focus on what matters most. These important Thermodynamics questions cover high-weightage concepts from Thermal equilibrium and the concept of temperature, zeroth law of thermodynamics, Heat, work and internal energy, The first law of thermodynamics, isothermal and adiabatic processes, The second law of thermodynamics: reversible and irreversible processes — the topics JEE repeats every year.

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Subtopics in Thermodynamics

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Q1PhysicsUnit 8: Thermodynamics

The amount of work done by the gas system in increasing the volume of 10 mols of an ideal gas from one litre to 20 litres at

0^{0}

C will be

Q2PhysicsUnit 8: Thermodynamics

Assertion In an ideal thermodynamically reversible process, the energy from work performed by or on the system would be maximized, and that from heat would be minimized. Reason A reversible process is a process whose direction can be "reversed" by inducing infinitesimal changes to some property of the system via its surroundings, while not increasing entropy.

Q3PhysicsUnit 8: Thermodynamics

Natural processes are:

Q4PhysicsUnit 8: Thermodynamics

One mole of an ideal gas u ndergoes a process:

P=\frac{P_{0}}{1+\left(V_{0} / V\right)^{2}}

Here

P_{0}

and

V_{0}

are constants.change in temperature of the gas when volume is changed from

V=V_{0}

V=2 V_{0}

is:

Q5PhysicsUnit 8: Thermodynamics

In a certain process 500 cal of heat is given to a system and the system does

100 J

of work. The increase in internal energy of the system is

Q6PhysicsUnit 8: Thermodynamics

A gas undergoes change in its state from state

A

to state

B

, via three different paths as shown in the figure. Select the correct alternative(s) This question has multiple correct options

Q7PhysicsUnit 8: Thermodynamics

If a gas is compressed adiabatically by doing work of

150 \mathrm{J}

, the change in the internal energy of the gas is:

Q8PhysicsUnit 8: Thermodynamics

From below which are the disadvantages of nuclear energy?

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Frequently asked questions

What makes a Thermodynamics question "important" for JEE?

Important questions test core concepts that appear frequently across JEE Main and Advanced papers — definitions, standard formulas, and classic problem types.

Which subtopics in Thermodynamics are high-weightage?

Key areas include Thermal equilibrium and the concept of temperature, zeroth law of thermodynamics, Heat, work and internal energy, The first law of thermodynamics, isothermal and adiabatic processes, The second law of thermodynamics: reversible and irreversible processes. Prioritise these before moving to edge cases.

How many important questions should I revise?

Revise 30–50 important MCQs per unit in the last month before JEE. Focus on questions you got wrong at least once.

Can I practise only important questions on Goodmarks?

Pro users can filter by unit and subtopic to target high-yield areas. Free users can attempt sample questions on this page.