# MCQ for Class 11 Physics Chapter 13 Kinetic Theory with answer

MCQ for Class 11 Physics Chapter 13 : MCQs for Class 11 Physics Chapter 13 Kinetic Theory with Answers PDF Free Download prepared here according to the latest CBSE RBSE and Other State Board syllabus and NCERT Books.

## MCQ for Class 11 Physics Chapter 13 Kinetic Theory with answer

Q1. Kinetic theory of gases provide a base for

a) Both Charle’s law and Boyle’s law
b) None of these
c) Boyle’s law
d) Charle’s law

a) Both Charle’s law and Boyle’s law

Q2. When do real gases approach the ideal gas behaviour ?

a) At low pressure and high temperature
b) At high pressure and high temperature
c) At high pressure and low temperature
d) At low pressure and low temperature

a) At low pressure and high temperature

Q3. According to the kinetic theory of gases, the pressure exerted by a gas on the wall of the container is measured as

a) rate of change of momentum imparted to the walls per second per unit area

b) momentum imparted to the walls per unit area
c) change of momentum imparted to the walls per unit area
d) change in momentum per unit volume

b) momentum imparted to the walls per unit area

Q4. When a gas is in thermal equilibrium, its molecules

a) have the same average kinetic energy of molecules
b) have different energies which remain constant
c) have a certain constant energy
d) do not collide with one another

a) have the same average kinetic energy of molecules

Q5. Molecules of a ideal gas behave like

a) perfectly elastic rigid sphere
b) inelastic non-rigid sphere
c) perfectly elastic non-rigid sphere
d) inelastic rigid sphere

a) perfectly elastic rigid sphere

Q6. In kinetic theory of gases, it is assumed that molecules

a) have same mass but negligible volume
b) have different mass as well as volume
c) have same volume but mass can be different
d) have same mass but can have different volume

a) have same mass but negligible volume

Q7. The internal energy of a gram-molecule of an ideal gas depends on

a) pressure alone
b) volume alone
c) temperature alone
d) both on pressure as well as temperature

Q8. The phenomenon of Browninan movement may be taken as evidence of

a) kinetic theory of matter
c) corpuscular theory of light
d) photoelectric phenomenon

a) kinetic theory of matter

Q9. According to kinetic theory of gases, at absolute zero temperature

a) molecular motion stops
b) liquid hydrogen freezes
c) liquid helium freezes
d) water freezes

a) molecular motion stops

Q10. At a given temperature the force between molecules of a gas as a function of intermolecular distance is

a) first decreases and then increases
b) always increases
c) always decreases
d) always constant

a) first decreases and then increases

Q11. 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

(b) Low temperature and high pressure

Q12. 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

(a) 1.5

Q13. 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

Q14. 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

(b) 10059 K

Q15. The average kinetic energy of the molecules of a gas at 27°C is 9 10-20 J. what is its average K.E. at 227°C?

(a) 5 10-20 J
(b) 10 10-20 J
(c) 15 10-20 J
(d) 20 10-20 J

Q16. 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

(c) The r.m.s. velocity of all the gas molecules is more then the escape velocity of the moons surface

Q17. 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

Q18. 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

(c) More then external latent heat of fusion

Q19. 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

(a) Latent heat of fusion

Q20. 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

(b) J/kg°c

Q21. An ideal gas is that which can

(a) Be solidified
(b) Liquefied
(c) Not be liquefied
(d) Not be solidified

Q22. One mole of an ideal gas requires 207 J heat to raise the temperature by 10 K, when heated at constant pressure. If the same gas is heated at constant volume to raise the temperature by 10K, then heat required is

(a) 96.6 J
(b) 124 J
(c) 198.8 J
(d) 215.4 J

(b) 124 J

## MCQ Questions for Class 11 Physics Multiple Choice Questions with Answers

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