• # question_answer The densities of hydrogen and oxygen are 0.09 and 1.44 g ${{L}^{-1}}$. If the rate of diffusion of hydrogen is 1 then that of oxygen in the same units will be [RPMT 1994] A)                 4              B)                 ¼ C)                 16           D)                 1/16

${{r}_{O}}={{r}_{H}}\sqrt{\frac{{{d}_{H}}}{{{d}_{O}}}}=1\sqrt[\,]{\frac{0.09}{1.44}}=\sqrt{\frac{1}{16}}=\frac{1}{4}$