Two cylinders A and B of equal capacity are connected to each other via a stop cock. A contains an ideal gas at standard temperature and pressure. B is completely evacuated. The entire system is thermally insulated. The stop cock is suddenly opened. The process is :
isothermal
adiabatic
isochoric
isobaric
The entire system is thermally insulated, so no heat exchange will take place. Hence, the process will be adiabatic.
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