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Free download in PDF Class 11 Physics Chapter 13 Kinetic Theory Multiple Choice Questions and Answers for Board, JEE, NEET, AIIMS, JIPMER, IIT-JEE, AIEE and other competitive exams. MCQ Questions for Class 11 Physics with Answers were prepared based on the latest exam pattern. These short solved questions or quizzes are provided by Gkseries. These will help the students for preparation of their examination./p>
(1)
Cooking gas containers are kept in a lorry moving with uniform speed. The temperature of the gas molecules inside will.
[A]
remains the same
[B]
decrease for some and increase for others
[C]
decrease
[D]
increase
(2)
The temperature of a gas is a measure of
[A]
the average kinetic energy of the gaseous molecules
[B]
the average potential energy of the gaseous molecules
[C]
the average distance between the molecules of the gas
[D]
the size of the molecules of the gas
Answer: the average kinetic energy of the gaseous molecules
(3)
Boyle' law is applicable for an
[A]
isothermal process
[B]
isochoric process
[C]
adiabatic process
[D]
isobaric process
Answer: isothermal process
(4)
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
Answer: molecular motion stops
(5)
The phenomenon of Browninan movement may be taken as evidence of
[A]
kinetic theory of matter
[B]
electromagnetic theory of radiation
[C]
corpuscular theory of light
[D]
photoelectric phenomenon
Answer: kinetic theory of matter
(6)
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
Answer: first decreases and then increases
(7)
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
Answer: perfectly elastic rigid sphere
(8)
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
(9)
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
Answer: Both Charle’s law and Boyle’s law
(10)
In a diatomic molecules, the rotational energy at a given temperature
[A]
obeys Maxwell’s distribution
[B]
have the same volue for all molecules
[C]
equals the translational kinetic energy for each molecule
[D]
None of these
Answer: obeys Maxwell’s distribution
(11)
The average kinetic energy of gas molecules depends upon which of the following factor?
[A]
Temperature of the gas
[B]
Nature of the gas
[C]
Volume of the gas
[D]
None of these
Answer: Temperature of the gas
(12)
In the isothermal expansion of 10g of gas from volume V to 2V the work done by the gas is 575J. What is the root mean square speed of the molecules of the gas at that temperature?
[A]
499m/s
[B]
532m/s
[C]
520m/s
[D]
398m/s
(13)
Pressure exerted by a gas is
[A]
directly proportional to the density of the gas
[B]
directly proportional to the square of the density of the gas
[C]
inversely proportional to the density of the gas
[D]
independent of density of the gas
Answer: directly proportional to the density of the gas
(14)
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
Answer: At low pressure and high temperature
(15)
The deviation of gases from the behaviour of ideal gas is due to
[A]
attraction of molecules
[B]
absolute scale of temp
[C]
covalent bonding of molecules
[D]
colourless molecules
Answer: attraction of molecules
(16)
In a mixture of gases at a fixed temperature
[A]
heavier molecule has lower average speed
[B]
lighter molecule has lower average speed
[C]
heavier molecule has higher average speed
[D]
None of these
Answer: heavier molecule has lower average speed
(17)
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
Answer: rate of change of momentum imparted to the walls per second per unit area
(18)
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
Answer: have same mass but negligible volume
(19)
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
Answer: have the same average kinetic energy of molecules
(20)
An inflated rubber balloon contains one mole of an ideal gas, has a pressure p, volume V and temperature T. If the temperature rises to 1.1 T, and the volume is increaset to 1.05 V, the final pressure will be
[A]
1.1 p
[B]
p
[C]
less than p
[D]
between p and 1.1.
Answer: between p and 1.1.
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