Question

P-V plots for two gases during adiabatic processes are shown in the fig. Plots 1 and 2 should correspond respectively to –

• A. He and O₂₍
• B. O₂ and He
• C. He and Ar
• D. O₂ and N₂

Answer 1

Answer: (B)

O₂ and He

Answer 2

$\frac { \gamma \mathrm { P } } { \mathrm { V } }$

g_mono. > g_diatomic

So$\left( \frac { \mathrm { dP } } { \mathrm { dV } } \right) _ { \text {monoatomic } }$ > $\left( \frac { \mathrm { dP } } { \mathrm { dV } } \right) _ { \text {Diatomic } }$