Published by:
CGP EDU Academic Team
Published on: August 13, 2026
Two cylinders 
and 
of equal volume are connected to each other via a stopcock. Cylinder 
contains an ideal gas at temperature 
and pressure 
. Cylinder 
is completely evacuated. The entire system is thermally insulated. Now stopcock is suddenly opened. Then
Text Solution
Verified by ExpertsThe correct answer is:
B
Since the process (called free expansion) is rapid and cannot be controlled. The intermediate states are non-equilibrium states and do not satisfy the gas equation. In due course, the gas does return to an equilibrium state.
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