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The rms speed of helium in ms^(-1) (atom...

The rms speed of helium in `ms^(-1)` (atomic mass = 4.0g `mol^(-1)`) at 400K is

A

1580

B

15.8

C

28

D

158

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The correct Answer is:
A
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AAKASH SERIES-STATES OF MATTER-OBJECTIVE EXERCISE -2
  1. The density of an ideal gas is 0.03 g/cm^3, its pressure is 10^6 dy/c...

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  2. The rms velocity of an ideal gas at 300 K is 12240 ems^(-1), what is t...

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  3. The rms speed of helium in ms^(-1) (atomic mass = 4.0g mol^(-1)) at 40...

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  4. The density of a gas is l gm/lit at STP. At 6 atm pressure and 546^@C,...

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  5. The rms velocity of an ideal gas at 300 K is 12240 ems^(-1), what is t...

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  6. At what temperature the velocity of O(2) molecules will have the same ...

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  7. In Vander Waal's equation of state of the gas law, the constant 'b' is...

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  8. A vessel of 25 litre capacity contains 10 moles of steam under pressur...

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  9. The compression factor (compressibility factor) for one mole of a van ...

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  10. The boiling point of water in pressure cooker is

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  11. The gas that liquefies first, when cooled from 500K to its critical te...

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  12. Critical temperature is least for

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  13. For a van der Waal's gas, determine Boyle Temperature (given a = 4.5 a...

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  14. The viscosity of four liquids P, Q, R and S are 85, 11.4, 18 and 12.3 ...

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  15. Which one of the following statements is not correct?

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  16. When the temperature is increased, surface tension of water

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  17. Regarding the surface tension property of liquids, the correct stateme...

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  18. Which of the following expression regarding the unit of coefficient of...

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  19. The surface tension of water at 20°C is 72.75 dyne cm^(-1) . Its value...

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  20. Water drops stick to a glass surface due to

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