The r.m.s speed of hydrogen molecules at room temperature is 2400 m/s. At room temperature, the r.m.s. speed of oxygen molecules would be

400 m/s

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300 m/s

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482 m/s

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1600 m/s

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Solution

The correct option is C 482 m/s
$U_{O_{2}} = \sqrt{\frac{3 R T}{M}} = \sqrt{\frac{3 \times 8.314 \times 298}{32 \times 10^{- 3}}}$ $U_{O_{2}} = 482 m / s$

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2400 m s^{- 1}

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At a certain temperature, the r.m.s velocity for $O_{2}$ is 400 m/sec. At the same temperature, the r.m.s velocity for $H_{2}$ molecules will be

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