Home
Class 12
CHEMISTRY
At room themperature, the average speed ...

At room themperature, the average speed of Helium is Helium is higher than of Oxygen by a factor of :

A

`2sqrt2`

B

`6sqrt2`

C

8

D

6

Text Solution

Verified by Experts

The correct Answer is:
A
Average speed `(r_(avg))=sqrt((8RT)/(piM))`
`(r_(He))/(r_(O_(2)))=sqrt(M_(O_(2))/(M_(He)))`
`(r_(He))/(r_(o_(2)))=sqrt32/4=2sqrt2`
`r_(He)=r_(o_(2))2sqrt2`
Promotional Banner

Topper's Solved these Questions

  • KVPY

    KVPY PREVIOUS YEAR|Exercise exercise|14 Videos

  • KVPY

    KVPY PREVIOUS YEAR|Exercise Matematics|1 Videos

  • KVPY 2021

    KVPY PREVIOUS YEAR|Exercise PART II CHEMISTRY|10 Videos

Similar Questions

Explore conceptually related problems

Calculate the rms speed of helium atoms at 127^(@) C .

The ratio of densities of helium and hydrogen is 4 : 2. Calculate the temperature at which the speed of sound in helium will be equal to speed in hydrogen at 27^(@) C ?

Assetion : Equal masses of helium and oxygen gases are given equal quantities of heat. The rise in temperature of helium is greater thant that in case of oxygen. Reason : The molecular mass of oxygen is more than molecular mass of helium.

Helium mixed with oxygen is used in the treatment of

At a same temperature , hydrgone is more soluble in water than helium . Which of them will have a higher value of K_(H) and why ?

What is the ratio of the rate of diffusion of helium gas to that of oxygen under identical conditions?

In the two vessels of same volume, atomic hydrogen and helium at pressure 1 atm and 2 atm are filled. If temperature of both the sample is same then average speed of hydrogen atoms ltC_(B)lt will be related to that of helium ltC_(He)gt as

Calculate the temperature at which sound travels in hydrogen with the same speed as in helium at N.T.P. The density of helium is twice that of hydrogen.

KVPY PREVIOUS YEAR-KVPY-Part 1 Chemistry
  1. The diamagenetic species is :

    Text Solution

    |

  2. The pH of 1.0 aqueous solution of NaCL,CH(3)COONa" and "NH(4)Cl will f...

    Text Solution

    |

  3. At room themperature, the average speed of Helium is Helium is higher ...

    Text Solution

    |

  4. Ammonia is NOT produced in the reaction of :

    Text Solution

    |

  5. The number of isomers which are ethers and having the molecular formul...

    Text Solution

    |

  6. The major product of the reaction of 2-butene with cold alkaline KMnO(...

    Text Solution

    |

  7. Among the compound I-IV, the compound having the lowest boining point ...

    Text Solution

    |

  8. Of the following reactions (i) ArArrB, DeltaG^(@)=250kjmol^(-1) (i...

    Text Solution

    |

  9. The IUPAC name for the following compound is

    Text Solution

    |

  10. The stability of carbocations underset(I)underset()((CH(3))(3)C^(opl...

    Text Solution

    |

  11. The acidity of compounds I-IV in water I. Ethanol II. Acetic Acid ...

    Text Solution

    |

  12. In the following reaction

    Text Solution

    |

  13. The reddish brown precipitate formed in the Fehling test for aldehydes...

    Text Solution

    |

  14. The reducing ability of the metals K, Au, Zn and Pb follows the order

    Text Solution

    |

  15. White phosphorous catches fire in air to produce dense white fumes. Th...

    Text Solution

    |

  16. The maximum number of electrons that can be filled in the shell with ...

    Text Solution

    |

  17. At a constant pressure P, the plot of volume (V) as a function of tem...

    Text Solution

    |

  18. Which of the following transformations can be carried out by using HI ...

    Text Solution

    |

  19. C(60) emerging from a source at a speed (v) has a de Broglie wavelengt...

    Text Solution

    |

  20. The lattice energies of NaCl, NaF, KCl and RbCl follow the order

    Text Solution

    |