Question # 1

Temperature of a gas is related to.

Choose an answer

Total K.E. of the gas molecules

The K.E. of the centre of mass of the gas

The P.E. of the centre of mass of the gas

Total K.E. of the molecules w.r.t the centre of mass of gas

Which of the following gases has the maximum rms speed at STP.

Choose an answer

O2

H2

N2

CO2

The base unit of temperature in SI is

Choose an answer

Fahrenheit

Celsius

Kelvin

Rnakine

On increasing the temperature of source efficiency of Carnot engine.

Choose an answer

Increase

Decrease

First increases and then decreases

Does not change

If volume of the gas doubled without changing its temperature the pressure of the gas is

Choose an answer

Reduced to half of original value

Not changed

Reduced to one fourth of original value

Doubled

What happens to internal energy of a piece of lead when hammered.

Choose an answer

Increases

Decreases

Remains unchanged

Becomes zero

If we place oure hand below a lighted lamp we feel warmer due to.

Choose an answer

Conduction

Convection

Radiation

None of these

Difference between the molar heat capacity constant pressure and that a constant volume is equal to

Choose an answer

Root mean square velocity

Mean free path

Boltzmann's constant

Universal gas constant

What is a thermal properly of a material that determines the quantity of energy required to change the phase of a unit mass of that substance.

Choose an answer

Specific heat

Latent heat

Internal energy

Specific energy

What is the total entropy change during an reversible cycle.

Choose an answer

Unity

Infinite

Zero

Cannot be detected

When ever a system is made to complete a cyclic process the work done during the complete cycle.

Choose an answer

Is zero

Is negative

Is positive

Depends upon the path followed

The highest efficiency of a heat engine whose low temperature is 17 oC and the high temperature of 200 oC is.

Choose an answer

20%

30%

35%

40%

In which temperature range water decreases in volume with increasing temperature.

Choose an answer

From 0 ^oC to 4 ^oC

from 0 ^oC to 10 ^oC

from 50 ^oC to 100 ^oC

from 75 ^oC to 100 ^oC

The specific heat capacity of the body depends upon.

Choose an answer

the heat given to it

Mass of the body

Temperature raised

Material of the body

Which is the heat transfer mode between an object and its environment due to circular fluid motion.

Choose an answer

Conduction

Convection

Radiation

Mass transfer

No entropy change is associated with

Choose an answer

Isothermal process

Adiabatic process

Isochoric process

Isoteric process

Let at constant temperature the pressure of an ideal gas be doubled so that the new volume is.

Choose an answer

Doubled the original volume

Same as original volume

Reduced to half the original volume

Reduced to two times the original volume

Which of the following in the best container for gas during adiabatic process.

Choose an answer

Copper vessel

Thermos flask

Glass container

Wooden container

The ration Cv/Cp = y for a diatomic gas like air is

Choose an answer

1.29

1.30

1.40

1.67

How does heat transfer between objects.

Choose an answer

From cold to hot objects

From hot to cold objects

By electromagnetic radiations

From hotter to hottest objects.

Which following properties of molecules of a gas is same for all gases at a particular temperature.

Choose an answer

Momentum

Mass

velocity

K.E.

More Classes

Other Links

PPSC Physics Chapter 3 Thermal Properties of Matter MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer