1.

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

Answer»

The WORK done by the gas is less when it is expanded reversibly from `V_(1)" to "V_(2)` under adiabatic conditions as compared to that when expanded reversibly from `V_(1)" to "V_(2)` under isothermal conditions
The change in internal energy of the gas is (i) zero, if it is expanded reversibly with `T_(1)=T_(2)`, positive, if it is expanded reversibly under adiabatic conditions with `T_(1)neT_(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 irreversibly from `(p_(2),V_(2))" to "(p_(1),V_(1))`, against constant PRESSURE `p_(1)`

Answer :A::C::D


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