Chemistry - Ideal Gas Question with Solution | TestHub

Average velocity $V_{av}=\sqrt{\frac{8RT}{\pi M}}$ and RMS velocity $V_{rms}=\sqrt{\frac{3RT}{\pi M}}$ are correct formulas.

Also, $P=\rho RT$ is a valid relation for gases.

But $V_{av}\ne 0.816V_{rms}$ (this relation is incorrect here).

Hence, correct options are (a) and (c).