Question # 1

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

Real gases obey gas laws only at

Choose an answer

Low pressure and high temperature

High pressure and low temperature

High pressure and high temperature

Low pressure and low temperature

The pressure necessary to liquify a gas at the critical temperature is called.

Choose an answer

Normal pressure

Atmospheric pressure

Critical pressure

Liquid pressure

When a perfect gas is supposed to expand freely in an isolated vessel the gas has undergone.

Choose an answer

An increase in pressure

An increase in temperature

A change in phase

A change in entropy

Under an isothermal process internal energy of the system.

Choose an answer

Increases

Decreases

Remain constant

is Zero

A cup of coffee at 80 ^oC is left to cool to 30 oc if the heat capacity of the cup and coffee is 2.0 kJ k-1 how much heat is released during the cooling.

Choose an answer

0.04 kJ

100 KJ

60 kJ

160 kJ

Which of the following has maximum specific heat.

Choose an answer

Glass

Iron

Brass

Lead

Which law states that if two systems are in thermal equilibrium with a third system they are also in the thermal equilibrium with each other.

Choose an answer

Third law of thermodynamics

Second law of thermodynamics

First law of thermodynamics

Zeroth law of thermodynamics

A fixed mass of an ideal gas absorbs 1000 J of heat and expands under a constant pressure of 20 kPa from a volume of 25 x 10-3 m3 to a volume 50 x 10-3 The change internal energy of the gas is.

Choose an answer

500 J

1000 J

-1000 J

Zero

Which of the following is a thermodynamic temperature scale.

Choose an answer

Celsius scale

Fahrenheit scale

Kelvin scale

Rankine scale

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

Choose an answer

Conduction

Convection

Radiation

None of these

The ration of Universal gas constant and Avogadro's number is called.

Choose an answer

Equilibrium constant

Velocity constant

Boitzmann's constant

Gravitational constant

Under steady state the temperature of a body

Choose an answer

Increase's with time

Decreases with time

Does not charge with time

None of the above

Thermal conduction in metals differs from thermal conduction in insulators,. The reasons for this is that , in metals heat can be transported by.

Choose an answer

Electrons

Lattice vibrations

Photons

Positive ions

In an isobaric process there is no.

Choose an answer

Pressure change

Internal energy change

Heat exchanged

volume change or work done

Which of the following pairs represent units of the same physical quantity.

Choose an answer

Kelvin and joule

Kelvin and calrorie

Newton and calorie

Joule and calorie

The phenomenon of Brownian motion shows that

Choose an answer

Molecules exist and can be seen as bright dots moving about

Molecules moves about randomly at highs speeds

Smoke particles behaves as molecules

Smoke particles can be used as models of air molecues.

What is the total entropy change during an reversible cycle.

Choose an answer

Unity

Infinite

Zero

Cannot be detected

The amount of heat needed per unit mass to raise the temperature of a system one degree at constant pressure is numerically aqual to

Choose an answer

The specific heat

The specific thermal energy

The specific heat at constant pressure

the internal energy of the gas

How much lce will melt by 50,000 J of heat.

Choose an answer

120 J

130 g

140 J

150 g

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