Chemistry Thermodynamics and Thermochemistry IInd & IIIrd Law of Thermodynamics and Entropy ) Single Correct MCQ
Published on: August 13, 2026

The work done to contract a gas in a cylinder, is 462 joules . 128 joule energy is evolved in the process. What will be the internal energy change in the process

A
+ 590 joules
B
– 334 joules
C
+ 334 joules
D
– 590 joules

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Verified by Experts
The correct answer is:
C

As the work is done on system, it will be positive i.e. (heat is evolving)

From the I st law of thermodynamics

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