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Two cylinders A and B of equal capacity ...

Two cylinders A and B of equal capacity are connected to each other via a stop cock. Cylinder A contains an ideal gas at standard temperature and pressure. Cylinder B is completely evacuated. The entire system is thermally insulated. The stop cock is suddenly opened. The process is:

A

isothermal

B

adiabatic

C

isochoric

D

isobaric

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