[Pb. CET 2000; RPMT 2000]
A) $ H _{2} $
B) $ N _{2} $
C) $ He $
D) $ O _{2} $
Correct Answer: A
$ v=\sqrt{\frac{\gamma RT}{M}} $
Therefore $ v\propto \frac{1}{\sqrt{M}} $ . Since $ M $ is minimum for $ H _{2} $ so sound velocity is maximum in H2.
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