CBSE Class 11 Physics Kinetic Theory Quiz 1

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

A High temperature and low pressure B Low temperature and high pressure C High temperature and high pressure D 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?

A 1.5 B 2.5 C 1.0 D 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

A H² B F² C O² D Cl²

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

A 10059°C B 10059 K C 10332°C D 10332 K

5. Moon has no atmosphere because

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

A 0.25 km/s B 0.5 km/s C 0.75 km/s D 6 km/s

7. Latent heat of ice is

A Less than external latent heat of fusion B Equal to external latent heat of fusion C More then external latent heat of fusion D 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

A Latent heat of fusion B Evaporation C Solidification D Latent heat of fission

9. Which of the following is the unit of specific

A J kg/°c B J/kg°c C kg°c/J D J kg/°c²

10. An ideal gas is that which can

A Be solidified B Liquefied C Not be liquefied D Not be solidified