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the pressure and density of hydrogen gas...

the pressure and density of hydrogen gas, kept in a vessel are `1.013 times 10^6 dyn.cm^-2` and `0.089 g.L^-1`, respectively, The rms speed of the gas molecules will be

A

`18.5 m.s^-1`

B

`185 m.s^-1`

C

`1.85 km.s^-1`

D

`18.5 km.s^-1`

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The correct Answer is:
C
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