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

Kinetic Theory Class 11 Physics MCQs Questions with Answers

Check the below NCERT MCQ Questions for Class 11 Physics Chapter 13 Kinetic Theory with Answers Pdf free download. MCQ Questions for Class 11 Physics with Answers were prepared based on the latest exam pattern. We have Provided Kinetic Theory Class 11 Physics MCQs Questions with Answers to help students understand the concept very well.

Class 11 Physics Chapter 13 Quiz

Class 11 Physics Chapter 13 MCQ Online Test

You can refer to NCERT Solutions for Class 11 Physics Chapter 13 Kinetic Theory to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Kinetic Theory Class 11 Physics MCQ online test

Q1.	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

Ans: H²

Q2.	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

Ans: Latent heat of fusion

Q3.	One any planet, the presence of atmosphere implies [nrms = root mean square velocity of molecules and ne = escape velocity]
	A.nrms << ne
	B.nrms > ne
	C.nrms = ne
	D.nrms = 0

Ans: nrms << ne

Q4.	Calculate the RMS velocity of molecules of a gas of which the ratio of two specific heats is 1.42 and velocity of sound in the gas is 500 m/s
	A.727 m/s
	B.527 m/s
	C.927 m/s
	D.750 m/s

Ans: 727 m/s

Q5.	The r.m.s. speed of the molecules of a gas in a vessel is 200 m/s. if 25% of the gas leaks out of the vessel, at constant temperature, then the r.m.s. speed of the remaining molecules will be
	A.400 m/s
	B.150 m/s
	C.100 m/s
	D.200 m/s

Ans: 200 m/s

Q6.	A gas is taken in a sealed container at 300 K. it is heated at constant volume to a temperature 600 K. the mean K.E. of its molecules is
	A.Halved
	B.Doubled
	C.Tripled
	D.Quadrupled

Ans: Doubled

Q7.	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

Ans: The r.m.s. velocity of all the gas molecules is more then the escape velocity of the moons surface

Q8.	A unit mass of solid converted to liquid at its melting point. Heat is required for this process is
	A.Specific heat
	B.Latent heat of vaporization
	C.Latent heat of fusion
	D.External latent heat

Ans: Latent heat of fusion

Q9.	One mole of ideal gas required 207 J heat to rise the temperature by 10°K when heated at constant pressure. If the same gas is heated at constant volume to raise the temperature by the same 10°K the heat required is (R = 8/3 J/mole °K)
	A.1987 J
	B.29 J
	C.215.3 J
	D.124 J

Ans: 124 J

Q10.	The r.m.s velocity of the molecules of an ideal gas is C at a temperature of 100K. at what temperature is r.m.s. velocity will be doubted?
	A.200 K
	B.400 K
	C.300 K
	D.50 K

Ans: 400 K

Q11.	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

Ans: 124 J

Q12.	5 gm of air is heated from 273°K to 275°K. the change in internal energy of air will be (CV = 172 cal/kg °K and 4.2 J/cal)
	A.7.22 J
	B.5.22 J
	C.8.16 J
	D.3.5 J

Ans: 7.22 J

Q13.	The specific heat of a gas in isothermal process is
	A.Zero
	B.Negative
	C.Remains constant
	D.Infinite

Ans: Infinite

Q14.	The internal energy of one mole of an ideal gas depend upon
	A.Volume of gas
	B.Temperature of gas
	C.Nature of gas
	D.Density of gas

Ans: Temperature of gas

Q15.	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

Ans: J/kg°c

Q16.	For a gas, the r.m.s. speed at 800K is
	A.Half the value at 200 K
	B.Double the value at 200 K
	C.Same as at 200 K
	D.Four times the value at 200 K

Ans: Double the value at 200 K

Q17.	PV/3 = RT, V represents volume of
	A.Any amount of gas
	B.2 moles of gas
	C.3 moles of gas
	D.4 moles of gas

Ans: 3 moles of gas

Q18.	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

Ans: 15 10-20 J

Q19.	At constant volume temperature is increased then
	A.Collision on walls will be less
	B.Collision frequency will be increases
	C.Collision will be in straight line
	D.Collision will not change