[shlok singh]

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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 :

(1) isochoric (2) isobaric
(3) isothermal (4) adiabatic

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