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For a given at 1 atm pressure, rms speed of the molecules is 200 m/s at 127ºC. At 2 atm pressure and at 227ºC, the rms speed of the molecules will be –

1. 100m/s
2. 80 5 m/s
3. 100 5 m/s
4. 80 m/s

Correct answer: 100 5 m/s

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