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When gas in a vessel expands, it interna...

When gas in a vessel expands, it internal energy decreases. The process involved is

A

irreversible

B

reversible

C

adiabatic

D

isothermal

Text Solution

Verified by Experts

The correct Answer is:
C
`du+dw=dQ=0" "therefore du=-dw`.
Hence change must be adiabatic.
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