For a gas `R/C_V` = 0.4, where R is the universal gas constant and C, is molar specific heat at constant volume. The gas is made up of molecules which are

Options

A. rigid diatomic
B. monoatomic
C. non-rigid diatomic
D. polyatomic

Answer

A

Explanation

For the gas `R/C_(V)=0.4=2/5`
`thereforeC_(V)=(5R)/2`
For a rigid diatomic gas, there are five degrees of freedom and `C_(V)=(5R)/2`.
`therefore` The gas consists of rigid diatomic molecules.