# Kinetic Theory MCQ Questions for Class 11 Physics Chapter 13 with Answers

NCERTCOURSE.COM given here the NCERT chapter-wise Multiple Choice Questions from Class 11 Physics book Chapter 13 Kinetic Theory with Answers Pdf free download. This may assist you to understand and check your knowledge about the chapters. Students also can take a free test of the Multiple Choice Questions of Kinetic Theory. Each question has four options followed by the right answer. These MCQ Questions are selected supported by the newest exam pattern as announced by CBSE.

## Q1. A hotter gas implies higher average value of:

(i) heat content
(ii) K.E.
(iii) total energy
(iv) internal energy

(ii) K.E.

## Q2. A unit mass of solid converted to liquid at its melting point. Heat is required for this process is

(i) Specific heat
(ii) Latent heat of vaporization
(iii) Latent heat of fusion
(iv) External latent heat

(iii) Latent heat of fusion

## Q3. Energy supplied to convert unit mass of substance from solid to liquid state at its melting point is called

(i) Latent heat of fusion
(ii) Evaporation
(iii) Solidification
(iv) Latent heat of fission

(i) Latent heat of fusion

## Q4. Kinetic theory of gases provide a base for

(i) Both Charle’s law and Boyle’s law
(ii) None of these
(iii) Boyle’s law
(iv) Charle’s law

(i) Both Charle’s law and Boyle’s law

## Q5. The law of equipartition of energy is applicable to the system whose constituents are:

(i) in orderly motion
(ii) at rest
(iii) in random motion
(iv) moving with constant speed

(iii) in random motion

(i) Halved
(ii) Doubled
(iii) Tripled

(ii) Doubled

## Q7. Moon has no atmosphere because

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

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

## Q8. When a gas is in thermal equilibrium, its molecules

(i) have the same average kinetic energy of molecules
(ii) have different energies which remain constant
(iii) have a certain constant energy
(iv) do not collide with one another

(i) have the same average kinetic energy of molecules

## Q9. Gases deviate from perfect gas behaviour because their molecules

(i) are polyatomic
(ii) are of very small size
(iii) don’t attract each other
(iv) interact with each other through intermolecular forces

(iv) interact with each other through intermolecular forces

(i) 727 m/s
(ii) 527 m/s
(iii) 927 m/s
(iv) 750 m/s

(i) 727 m/s

(i) H²
(ii) F²
(iii) O²
(iv) Cl²

(i) H²

## Q12. In kinetic theory of gases, it is assumed that molecules

(i) have same mass but negligible volume
(ii) have different mass as well as volume
(iii) have same volume but mass can be different
(iv) have same mass but can have different volume

(i) have same mass but negligible volume

## Q13. Which of the following can be the basis of sesparating a mixture of gases?

(i) Graham’s law of diffusion
(iii) Charle’s law
(iv) Boyle’s law

(i) Graham’s law of diffusion

### Q14. Energy supplied to convert unit mass of substance from solid to liquid state at its melting point is called

(i) Latent heat of fusion
(ii) Evaporation
(iii) Solidification
(iv) Latent heat of fission

(i) Latent heat of fusion

## Q15. Real gases show mark able deviation from that of ideal gas behavior at

(i) High temperature and low pressure
(ii) Low temperature and high pressure
(iii) High temperature and high pressure
(iv) Low temperature and low pressure

(ii) Low temperature and high pressure

## Q16. The internal energy of a gram-molecule of an ideal gas depends on

(i) pressure alone
(ii) volume alone
(iii) temperature alone
(iv) both on pressure as well as temperature

(i) pressure alone

## Q17. K.E. of gas molecules is zero at:

(i) 0°C
(ii) 273°t
(iii) -273°C
(iv) none of the above

(iii) -273°C

## Q18. PV/3 = RT, V represents volume of

(i) Any amount of gas
(ii) 2 moles of gas
(iii) 3 moles of gas
(iv) 4 moles of gas

(iii) 3 moles of gas

## Q19. The specific heat of a gas

(i) Has only one value
(ii) Has two values CP and CV
(iii) Is proportional to the square root of its absolute temperature
(iv) Can have any value between 0 and infinity

(iv) Can have any value between 0 and infinity

## Q20. According to kinetic theory of gases, at absolute zero temperature

(i) molecular motion stops
(ii) liquid hydrogen freezes
(iii) liquid helium freezes
(iv) water freezes

(i) molecular motion stops

## Q21. For an ideal gas

(i) Size of molecules is negligible.
(ii) There is no force of attraction or repulsion amongst the molecules.
(iii) It strictly obeys the gas laws.
(iv) All of the above.

(iv) All of the above.

(i) J kg/°c
(ii) J/kg°c
(iii) kg °c/J
(iv) J kg/°c²

(ii) J/kg°c

(i) 96.6 J
(ii) 124 J
(iii) 198.8 J
(iv) 215.4 J

(ii) 124 J

## Q24. Boyle’ law is applicable for an

(i) isothermal process
(ii) isochoric process
(iv) isobaric process

(i) isothermal process

## Q25. If r.m.s. speed of a gas increases, then its pressure :

(i) increases
(ii) decreases
(iii) remains same
(iv) may increase or decrease

(i) increases

## Q26. The specific heat of a gas in isothermal process is

(i) Zero
(ii) Negative
(iii) Remains constant
(iv) Infinite

(iv) Infinite

## Q27. The average kinetic energy of gas molecules depends upon which of the following factor?

(i) Temperature of the gas
(ii) Nature of the gas
(iii) Volume of the gas
(iv) None of these

(i) Temperature of the gas

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