States of Matter - Result Question 30
30. The rate of diffusion of methane at a given temperature is twice that of a gas $X$. The molecular weight of $X$ is
(a) 64.0
(b) 32.0
(c) 4.0
(d) 8.0
(1990, 1M)
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Answer:
Correct Answer: 30. (a)
Solution:
$\dfrac{r _{CH _4}}{r _X}=2=\sqrt{\dfrac{M _X}{16}} \Rightarrow M _X=64$
BETA
