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At what temperature is the rms velocity ...

At what temperature is the rms velocity of a hydrogen molecule equal to that of an oxygen molecule at `47^(@)C`?

A

`-73K`

B

`3K`

C

`20K`

D

`80K`

Text Solution

Verified by Experts

The correct Answer is:
C
`v_(1)=sqrt((3RT_(1))/(M_(1)))`, `v_(2)=sqrt((3RT_(2))/(M_(2)))` i.e. `T_(1)=(M_(1))/(M_(2))T_(2)=(2)/(32)xx320=20K`
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CBSE COMPLEMENTARY MATERIAL-KINETIC THEORY OF GASES-Objective question
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  2. The average kinetic energy of a gas molecule at 27^(@)C is 621xx10^(-1...

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  3. The equation of state for 5 g of oxygen at a pressure P and temperatur...

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  9. Molecular motion shows itself as

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  10. A sample of gas is at 0^(@)C. The temperature at which its rms speed o...

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  12. When a gas filled in a closed vessel is heated through 1^(@)C , its p...

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  13. The root mean square speed of the molecules of a gas is

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  14. The root mean square velocity of gas molecules is 10km//s. The gas is ...

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  15. According to the kinetic theory of gases, at absolute temperature

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  18. An ant is moving on a plane horizontal surface. The number of degrees ...

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