question_answer

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\[7{}^\circ C\].   The   gas   is \[(R=8.3\,J\,mo{{l}^{-1}}{{K}^{-1}})\]                   [AIEEE 2006]

A)  Diatomic

B)  triatomic

C)  a mixture of monatomic and diatomic

D)  monatomic

Correct Answer: A

Solution :

[a] For adiabatic process,

So, (from 1st law,)

(where,is degree of freedom)

So, it is a diatomic gas.