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If the pressure in a closed vessel is re...

If the pressure in a closed vessel is reduced by drawing out some , the mean free path of the molecules :

A

is increased

B

is decreased

C

increases or decreases according to the nature of gas

D

remains unchanged

Text Solution

Verified by Experts

The correct Answer is:
A
If pressure of the gas is reduced, then the frequency of collision of a molecule will decrease due to the decrease in the number of molecules per unit volume and the mean free path will increase.
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PREMIERS PUBLISHERS-KINETIC THEORY OF GASES-OTHER IMPORTANT QUESTIONS & ANSWERS (I. Multiple Choice Questions.)
  1. Mean free path of a gas molecule is :

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  2. Root mean square speed of the molecules of ideal gas is V. If pressure...

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  3. The root mean square velocity of a gas molecule of mass m at a given t...

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  4. Select the odd man out from the following statements.

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  5. The temperature of H2 at which the rms velocity of its molecules is se...

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  6. The root mean square speed of the molecules of a diatomic gas is V. Wh...

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  7. At room temperature , the rms speed of the molecules of a centain diat...

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  8. Assertion : The root mean square and most probable speeds of the molec...

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  9. The phenomenon of Brownian movement may be taken as evidence of :

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  10. One mole of a gas occupies 22.4 lit at N.T.P Calculate the difference ...

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  11. Choose the odd man out.

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  12. Degree of freedom of a polyatomic gas is :

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  13. In an adiabatic change, the pressure and temperature of a monoatomic g...

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  14. If for a gas R/Cv = 0.67 , this gas is made up of molecules, which are...

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  15. In the given (V - T) diagram , what is the relation between pressure P...

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  16. Select the correct statement from the following statements.

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  17. Select the incorrect statement from the following statements.

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  18. The ratio of the specific heats CP/CV = gamma in terms of degrees of f...

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  19. If the pressure in a closed vessel is reduced by drawing out some , th...

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  20. If gamma=CP/CV for a gas and R is universal gas constant then select ...

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