Question

Rate of diffusion of a gas $B$ is 6 times compared to that of a diatomic gaseous element $A$. If atomic weight of $A$ is 36, molecular weight of gas $B$ will be:

• A. 1
• B. 2
• C. $\sqrt{2}$
• D. 4

Answer 1

The correct option is A 1

$\frac{r_A}{r_B}=\sqrt{\frac{M_B}{M_A}}$
$\frac{1}{6}=\sqrt{\frac{M_B}{36}}$
$M_B=1$