Question

Which among the following has same kinetic energy as $O_2$ gas at NTP ?

• A. $H_2$
• B. $N_2$
• C. $C{O}_2$
• D. None of these

Answer 1

Answer: (A), (B)

$H_2$
$N_2$

Hydrogen, oxygen, and nitrogen are diatomic gases.

Therefore, the average kinetic energy per molecule= $\frac{f}{2}$$kT$

For, diatomic molecule $f=5$

$\therefore kineticenergy=\frac{5}{2}$ $kT$

Hence, option $A$ and $B$ are correct.