Question # 1

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.

A metallic rod is continuously heated at its two ends, The heat following through the rod does not depend upon.

Choose an answer

Mass of the upon

Area of cross section of the rod

Temperature gradient between two ends

Time for which heat flow through the rod

If the specific latent heat of vaporization of oxygen is 214 kJ kg-1 how much heat will be absorbed when 3.0 kg of oxygen is boiled off at its boiling point.

Choose an answer

14 kJ

64 k J

140 kJ

642 k j

What should be the shape of an ideal thermometer.

Choose an answer

Sphereical

Cubical

Cylindrical

Rectangular

When a hot liquid is mixed with a cold liquid temperature of the mixture.

Choose an answer

First decreases and then becomes constant

First increases and then becomes constant

Continuously decreaes

Is undefined for some time and then nearly becomes constant

The internal energy of monoatomic gas is.

Choose an answer

3/2 RT

Independent of temperature

In the form of K.E.

Partially kinetic and partially potential

A heat engine with 100% efficiency would have to

Choose an answer

Do no work

Be at a uniform temperature

Use no heat

Discharge at 0^oC

Which of the following devoices are used for measuring temperature.

Choose an answer

Thermocouples

Thermistors

Thermometers

All of these

The transfer of thermal energy between regions of matter due to a temperature gradient is called.

Choose an answer

Conduction

Radiation

Convection

Sublimation

Which statement about convection is correct.

Choose an answer

Brownian motion is a form of convection

Convection occurs only in gas

Convection results from a density change

Evaporation is a form of convection

A convention current is the movement of fluid caused by the change in.

Choose an answer

Pressure

Temperature

Densities

Volume

Below which temperature gas can be liquified by increasing its pressure.

Choose an answer

Natural temperature

Boyle temperature

Critical temperature

Absolute zero

The temperature of 1 kg of hydrogen gas is the same as that of 1 kg of helium gas if.

Choose an answer

The gases have the same internal energy

The gas molecules occupy equal volumes

The gas molecules have the same root mean square speed

The gas molecules have same mean translational K.E.

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

According to kinetic energy of gases one assumes that the collisions between the molecules are.

Choose an answer

Perfectly elastic

Perfectly inelastic

Partly elastic

Partly inelastic

Which of the following should not change in isothermal operation.

Choose an answer

Heat constant

Volume

Pressure

Temperature

In free expansion of a gas. the internal energy of the system.

Choose an answer

Increases

Descreases

Remain unchanged

Becomes infinite

An immersion heater rated at 150 W is fitted into a large block of ice at 0 oC. The specific latent heat of fusionism 300 J g-1. How long does it take to melt 10 g of ice.

Choose an answer

5 s

10 s

15 s

20 s

In an isochoric process.

Choose an answer

Volume changes

Pressure changes

Temperature changes

Volume remains constant

Which thermometer is called sprint thermometer

Choose an answer

Alcohol thermometer

Mercury in glass thermometer

Gas thermometer

Radiation thermometer

Contrivances for converting heat into work are called.

Choose an answer

Heat pumps

Heat engines

IC engines

Jet engine

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