Question

What is the ratio of rate of diffusion of gas $A$ and $B$. The molecular mass of $A$ is 11 and molecular mass of $B$ is 44.

• A. 1
• B. 2
• C. 3
• D. 4

Answer 1

The correct option is B 2

As we know,
Rate of diffusion $=\sqrt{\frac{1}{Molecularmass}}$

$\therefore \frac{r_A}{r_B}=\sqrt{\frac{44}{11}}=\sqrt{4}=2$

Hence, the correct option is $\text{B}$