# The temperature at which the most probably speed of oxygen is equal to the rms velocity of hydrogen at NTP is?

(A) 4368 K (B) 6552 K (C) 436.8 K (D) 655.2 K

$v_{rms}$ of Oxygen $= v_{rms}$ of Hydrogen at 273 K.
$\Rightarrow \large \sqrt \frac{2RT}{32}$$=\large \sqrt \frac{3R \times 273}{2} \Rightarrow T = 273 \times 16 \times \large\frac{3}{2}$$ = 6552 K$