Question

If the rate of diffusion of A is 5 times that of B, what will be the density ratio of A and B?

• A.
  $1/25$
• B.
  $1/5$
• C.
  $125$
• D.
  $5$

Answer 1

The correct option is A

$1/25$
$B\Rightarrow r_1;d_{1}A\Rightarrow r_2;d_2\frac{r_1}{r_2}=\sqrt{\frac{d_2}{d_1}}\frac{r}{5r}=\sqrt{\frac{d_2}{d_1}}A:B{d}_2:d_1=1:25\frac{d_2}{d_1}=\frac{1}{25}$