During an isothermal process, how does the internal energy of a system change?

Thermodynamics MCQs for PPSC, FPSC, NTS, and Pakistan government job tests. Select an option below, then read the explanation.

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Subject
Thermodynamicsmechanical-engineering-mcqs › thermodynamics
Published
26 Jan 2019
Last updated
28 May 2026

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Explanation

In an isothermal process, the temperature remains constant, which means the internal energy of an ideal gas does not change. Therefore, the internal energy remains constant throughout the process.

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