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When an ideal gas undergoes unrestrained...

When an ideal gas undergoes unrestrained expansion, no cooling occurs because the molecules

A

Exert no attractive forces on each other

B

Do work equal to loss of `KE`

C

Collide without loss of energy

D

Are above the inversion temperature .

Text Solution

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In absence of attractive forces, energy is not needed to separate molecules from each other on expansion .
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P BAHADUR-GASEOUS STATE-Exercise
  1. Under critical conditions, the compressibility factor foa a gas is .

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  2. The behaviour of a real gas is usually depicted by plotting compressib...

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  3. When an ideal gas undergoes unrestrained expansion, no cooling occurs ...

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  4. For two gases A and B with molecular weights M(A) and M(B), respective...

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  5. The temperature at which the second virial coefficient of a real gas i...

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  6. The Joule -Thomson coefficient for a gas is zero at .

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  7. The team that accounts for intermolecular force in van der Waals' equa...

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  8. Total number of electrons in 1.4g dinitrogen gas is .

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  9. Consider 1 cm^(3) sample of air at absolute temperature T(0) at sea le...

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  10. Boyle's law may be experssed as .

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  11. According to Charles's law

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  12. For an ideal gas, the correct relation is .

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  13. if the pressure at the triple point of a substance is greater tha n1 a...

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  14. The mean free path (lambda) of a gas sample is given by .

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  15. If the intermolecular forces vanish away the volume occupied by the mo...

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  16. Four par ticles have speed 2, 3, 4 and 5 cm/s respectively Their RMS s...

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  17. If one mole of a monoatomic gas (gamma=7//53) is mixed with one mole o...

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  18. If the pressure of N(2)//H(2) mixture in a closed vessel is 100 atmosp...

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  19. Figure shows graphs of pressure versus density for an ideal gas at two...

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  20. The ratio a/b (the terms u8sed in van der Waals' equation) has the uni...

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