Question # 1

A frictionless heat engine can be 100% efficient only if its exhaust temperature is

Choose an answer

Equal to the input temperature

Less than the input temperature

0 ^oC

0 K

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

Efficiency of a Carnot engine depends on

Choose an answer

Temperature

Pressure

Volume

The nature of working substance

No entropy change is associated with

Choose an answer

Isothermal process

Adiabatic process

Isochoric process

Isoteric process

How do solar heat and light reach the Earth.

Choose an answer

By radiation

By convection

By conduction

By conduction and convection

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

Choose an answer

Natural temperature

Boyle temperature

Critical temperature

Absolute zero

In four stroke cycle the crank makes

Choose an answer

One complete revolution

Two complete revolutions

three complete revolutions

Four complete reveolutions

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

What kind of movement is dictated by the laws of thermodynamcis.

Choose an answer

Energy motion

Heat work

Light heat

Energy light

How many calories of heat are required to evaporate completely 1 g or ice at 0^oC

Choose an answer

120 calories

520 calories

720 calories

920 calories

Which of the following has negative specific heat

Choose an answer

Ne

CO2

O2

Sturated vapours

Which quantity is common for systems in thermal equilibrium.

Choose an answer

Heat

Temperature

Momentum

Specific heat

A standard fixed point for calibrating a thermometer is.

Choose an answer

Boiling point of water

Melting point of ice

Temperature of steam

Triple point of water

The process in which no heat enters or leaves the system is called.

Choose an answer

Isdobaric

Isochoric

Isothermal

Adiabatic

Triple point of water in Kelvin scale is

Choose an answer

0 K

100 K

273 .15 K

373.15 K

In the free expansion of a perfect gas there is no.

Choose an answer

work done

Heat exchnged

Internal energy changed

All of the above

What is the heat required in Kilo joules when the temperature of 100 g of copper is raised thgough 20 K/. Specific heat capacity of copper is 0.4 x 10-3 kg -1 k-1

Choose an answer

0.4 kj

0.8 kj

400 kj

800 kj

The behavior of the gases that can be easily liquefied is like that of the.

Choose an answer

Triatomic gases

Ideal gases

Van der walls gases

Dia atomic gases

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

Difference between Cp and Cv is equal to

Choose an answer

General gas constant

Planck's conatant

Molar gas constant

Boltzmann's constant

A diatomic gas contains only

Choose an answer

Translational K.E.

Rotational K.E.

Vibrational K.E.

All of these

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