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JEE Main 2021 (26 Aug, Shift 1) · Molecular Speeds & Maxwell Distribution

Molecular Speeds & Maxwell Distribution question from JEE Main 2021 (26 Aug, Shift 1)

Q64JEE Main 2021 · 26 AUG · SHIFT 1Easy

Molecular Speeds & Maxwell Distribution

The rms speeds of the molecules of Hydrogen, Oxygen and Carbon dioxide at the same temperature are VH, VO and VC respectively then:

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Answer: (a)

At the same temperature $v_{rms} \propto \frac{1}{\sqrt{M}}$ .
$M_{H_2} = 2 < M_{O_2} = 32 < M_{CO_2} = 44$
Lighter gas moves faster: $V_H > V_O > V_C$ .
So the answer is (a).

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