1.

The work of 146 kJ is performed in order to compress one kilo mole of a gas adiabatically and in this process the temperature of the gas increases by 7^(@)C. The gas is (R 8 cdot 3J" mol"^(-1) K^(-1)):

Answer»

DIATOMIC
triatomic
a mixture of MONOATOMIC and diatomic
monoatomic

Solution :WORK done during adiabatic process
`W=nC_(v)Delta T`
`146xx10^(3)=10^(3)C_(v)xx7 rArr C_(v)=20 cdot 85 J" mol"^(-1)K^(-1)`
This is same as `C_(v)` for diatomic gas `C_(v)=(5)/(2) R`
Thus, CORRECT choice is (a).


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