CBSE  /  Class 11  /  Physics  /  Kinetic Theory

  • 1. 
    Real gases show mark able deviation from that of ideal gas behavior at

  • High temperature and low pressure
  • Low temperature and high pressure
  • High temperature and high pressure
  • Low temperature and low pressure

  • 2. 
    One mole of mono atomic gas (g = 5/3) is mixed with one mole of diatomic gas (g = 7/5) what will be the value of g for the mixture?

  • 1.5
  • 2.5
  • 1.0
  • 2

  • 3. 
    A room temperature the r.m.s. velocity of the molecules of a certain diatomic gas is found to be 1930 m/sec. the gas is

  • H²
  • F²
  • O²
  • Cl²

  • 4. 
    The temperature at which the r.m.s. velocity of H² becomes escape velocity from the earth is,

  • 10059°C
  • 10059 K
  • 10332°C
  • 10332 K

  • 5. 
    Moon has no atmosphere because

  • It is far away form the surface of the earth
  • Its surface temperature is 10°C
  • The r.m.s. velocity of all the gas molecules is more then the escape velocity of the moons surface
  • The escape velocity of the moons surface is more than the r.m.s velocity of all molecules

  • 6. 
    At a certain temperature, hydrogen molecules have r.m.s. velocity of 3 km/s. what is the r.m.s velocity of the oxygen molecules at the same temperature?

  • 0.25 km/s
  • 0.5 km/s
  • 0.75 km/s
  • 6 km/s

  • 7. 
    Latent heat of ice is

  • Less than external latent heat of fusion
  • Equal to external latent heat of fusion
  • More then external latent heat of fusion
  • Twice the external latent heat of fusion

  • 8. 
    Energy supplied to convert unit mass of substance from solid to liquid state at its melting point is called

  • Latent heat of fusion
  • Evaporation
  • Solidification
  • Latent heat of fission

  • 9. 
    Which of the following is the unit of specific

  • J kg/°c
  • J/kg°c
  • kg°c/J
  • J kg/°c²

  • 10. 
    An ideal gas is that which can

  • Be solidified
  • Liquefied
  • Not be liquefied
  • Not be solidified
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