Home Physics Thermodynamics Heat, Carnot Engine, Refrigerator and Second Law of Thermodynamics Which of the following processes described b…
Physics Thermodynamics Heat, Carnot Engine, Refrigerator and Second Law of Thermodynamics MCQ (Single Correct)

Which of the following processes described below is irreversible?

A
The increase in temperature of an iron rod by hammering it.
B
A gas in a small container at a temperature T 1 is brought in contact with a big reservoir at a higher temperature T 2 which increases the temperature of the gas.
C
An ideal gas is enclosed in a piston cylinder arrangement with adiabatic walls.
D
All of above

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The correct answer is:
D

The process described in , and all are irreversible

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