Physics – Kinetic Theory of Gases – MCQs TEST (Maharashtra HSC Board)

Physics – Kinetic Theory of Gases – TEST    (MCQ Maharashtra HSC Board)

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#1. Which of the following properties of a gas will be zero at ˚K?

Kinetic energy

Vibrational energy

Density

Potential energy

#2. In the kinetic theory of gases it is assumed that the gas molecules

Repel each other

Are massless particles

Move with uniform velocity

Collide elastically

#3. In the kinetic theory of gases it is assumed that molecular collisions are

Inelastic

One dimensional

For negligible duration

Unable exert a mutual force

#4. At what temperature do all molecular motion cease?

-273˚ K

273˚ K

273˚ C

-273˚ C

#5. At what temperature does the kinetic energy of diatomic molecules become zero?

273˚ C

-273˚ K

-273˚ C

273˚ K

#6. The total number of degrees of freedom in a mono-atomic gas is attributed to

Translational motion

Rotational motion

All of the others

Vibrational motion

#7. Which of the following is true for ideal gases?

Molar specific heat at constant pressure is same for all gases

Molar specific heat at constant volume is same for all gases

Difference between molar specific heats at constant pressure and volume is same for all gases

Ratio of molar specific heats at constant pressure and volume is same for all gases

#8. The number of degrees of freedom for a rigid diatomic molecule is

4

6

5

7

#9. Who gave the law of equipartition of energy?

Avogadro

Maxwell

Boltzmann

Newton

#10. The average kinetic energy of the molecules of a gas is

Directly proportional to the absolute temperature of the gas

Inversely proportional to the absolute temperature of the gas

Independent of the mass of the gas molecules

Independent of the absolute temperature of the gas

#11. Which Law states that the coefficient of absorption of a body at a given temperature is equal to its coefficient of emission?

Boltzmann’s Law

Stefan’s law

Kirchoff’s law

Newton’s law

#12. Which of the following is the fastest mode of transfer of heat?

Conduction

Convection

Radiation

All of the other

#13. What are athermanous bodies?

Those which block heat radiation

None of the other

Those which allow heat radiation to pass

A special kind of black body

#14. A body that absorbs all incident radiations on itself is called a

Perfectly black body

Good absorber

A grey body

Black body

#15. Which of the following is true of a gas which is a good radiation absorber?

Poor reflector and transmitter

Good reflector

Perfect reflector and transmitter

Bad absorber

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Finish