Question # 1

Which of the given geometries will result in the largest convection consfficient.

Choose an answer

Vertical plate

Diagonal plate

horizontal plate facing upwards

Horizontal plate facing downwards

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

The specific heat capacity of a substance is the amount of heat required to.

Choose an answer

Raise its temperature by 1 K

Raise the temperature of 1 kg of the substance by 1 K

Melt 1 kg of the substance

Boil 1 kg of the substance

Identify the irreversible process

Choose an answer

Explosion of a bomb

Slow expansion of a gas

Slow compression of a gas

Slow compression of an eleastic spring

In four stroke cycle the crank makes

Choose an answer

One complete revolution

Two complete revolutions

three complete revolutions

Four complete reveolutions

In general work done on or by a gas depends on.

Choose an answer

The initial state only

The final state only

The initial and final states

The initial state the final state and the path

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

What happens to Carnot efficiency if the source temperature increases.

Choose an answer

Decreases

Increases

Remain the same

Becomes zero

When the temperature of a body is equal to that of the surrounding then the body appears

Choose an answer

Dull black

Red hot

In thermal equilibrium

To be cold

By definition a gas is said to be have undergone adiabatic compressing when

Choose an answer

No heat exchange occurs between the gas and its surroundings

The gas is compressed quickly

The gas is compressed slowly

The temperature of the gas remains constant

A gas thermometer is more sensitive than a mercury thermometer because the expansion of gas for 1 o/c rise in temperature is.

Choose an answer

Five times as much as mercury

Ten times as much as mercury

Twenty times as much as mercury

Hundred times as much as mercury

Entropy of universe is increasing day by da due to.

Choose an answer

Power generating processes

Energy used into work

Depletion of ozone

All of the above

If the number of gas molecules in a cubical vessel is increase from N to 3 N then its pressure and total energy will be.

Choose an answer

Half

Three times

Double

Four times

Which temperature is the absolute measure of temperature.

Choose an answer

Thermodynamic temperature

Freezing point

Boiling point

Absolute zero

Mean free path in a gas is the

Choose an answer

Distance travelled by a molecule before hitting a wall

Average distance travelled by a molecule in one second

Average distance travelled between molecules between any two successive collisions

Root mean square velocity

Which of the following is defined as the amount of heat required to raise the temperature of 1 g of water by 1 ^oC

Choose an answer

Joule

BTO

Electron volt

Calorie

On what factor the internal energy of a thermodynamic system depend upon.

Choose an answer

History

State

Process

Surroundings

If T1 and T2 are source and sink temperature respectively Carnot efficiency is.

Choose an answer

T1+T2/T1

T1-T2/T1

T1+T2/T2

T1-T2/T2

Significant motion for the molecules of a monoatomic gas is.

Choose an answer

Rotatory

Vibratory

Translatory

Random

Difference between Cp and Cv is equal to

Choose an answer

General gas constant

Planck's conatant

Molar gas constant

Boltzmann's constant

A heat engine with 100% efficiency would have to.

Choose an answer

Do no work

Be at uniform temperature

Use no heat

Discharge of 0 ^oC

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