JEE Physics 2025 Question with Solution

Given: A matching problem on thermodynamic processes.

Find: The correct correspondence between List-I and List-II.

From the solution table:

• A. Pressure varies inversely with volume of an ideal gas.
• B. Heat absorbed goes partly to increase internal energy and partly to do work.
• C. Heat is neither absorbed nor released by a system.
• D. No work is done on or by a gas.

Now match each statement:

1. A corresponds to the isothermal process because for an ideal gas at constant temperature,

so pressure varies inversely with volume. Therefore, A \to III.

2. B corresponds to the isobaric process. In a constant-pressure process, absorbed heat is used partly to increase internal energy and partly to do work. Therefore, B \to IV.

3. C corresponds to the adiabatic process because no heat is exchanged with the surroundings, that is,

Therefore, C \to I.

4. D corresponds to the isochoric process. At constant volume,

because $dV = 0$. Therefore, D \to II.

Hence, the correct matching is A–III, B–IV, C–I, D–II.

Therefore, the correct option is D.

Given: Statements describing four thermodynamic processes.

Find: The correct match.

Use the defining property of each process directly:

• In an isothermal process, for an ideal gas, pressure varies inversely with volume, so A \to III.
• In an isobaric process, heat supplied changes internal energy and also does work, so B \to IV.
• In an adiabatic process, no heat is absorbed or released, so C \to I.
• In an isochoric process, volume remains constant and no work is done, so D \to II.

Thus the match is A–III, B–IV, C–I, D–II, so the correct option is D.