1.

An ideal gas is expanded form (P_(1) V_(1) T_(1)) to (p_(2),V_(2) T_(2) used different conditions. The correct statement (s) among the following is (are)

Answer»

The WORK done by the gas is less when it is expanded revesibly from `V_(1),(to) V_(2)` under abiabitc conditions as COMPARED to that when expanded reversibly form `v_(1) (to)V_(2)`under isothemal conditions.
The change in internal energy of the gas is (i) ZERO , if it is expanded reversibly with `T_(1)= T_(2) ` and (ii) positive if it is expaned reversibyunder abiabatic conditions with `T_(1) ne T_(2)`
If the expansion is carried out FREELY, it is simultaneously both isothermal as well as adiabatic
The work done on the gas is maximum when it is compressed irrversibly from `(p_(2)V_(2)) " to " (P_(1), V_(1))` against constant pressen `P_(1)`

Answer :a,c,d


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