Question

For a gas undergoing an adiabatic process, the relation between temperature and volume is found to be $T{V}^{0.4}=$ constant. This gas must be:

• A. Hydrogen
• B. argon
• C. carbon dioxide
• D. helium

Answer 1

Answer: (A)

From the adiabatic relation $T{V}^{\gamma -1}=\text{constant}$ here $V-1=0.4$ which gives $V=1.4$ Therefore the gas is diatomic i.e., hydrogen.