Question # 1

When hot and cold water are mixed, the entropy.

Choose an answer

Decreases

Increases

Remain constant

Zero

For a gas obeying Boyle's Law, if the pressure is doubled, the volume becomes.

Choose an answer

Double

Three fold

One half

Remains the same

A cycle of petrol engine undergoes

Choose an answer

Two process

Three process

Four process

single process

A device based upon the thermodynamics property of matter is called.

Choose an answer

Calorimeter

Heat engine

thermometer

Voltmeter

In thermodynamics system internal energy decrease by 100 J and 100 J of work done on the system then heat lost will be.

Choose an answer

Zero

100 J

200 J

-200 J

At constant temperature and pressure, if volume of given mass of a gas is doubled then density is.

Choose an answer

Doubled

1/4 original

1/2 of original

Unchanged

The difference between tow molar capacities is equal to.

Choose an answer

Plank's constant

General gas equation

Molar gas constant

Boltzmann constant

Boltzman constant 'k' has same unit as.

Choose an answer

Temperature

Energy

Entropy

Pressure

The ideal gas law is.

Choose an answer

PV =NVk

P = NkT

PV =nRT

P=nRT

Cloud formation in atmosphere is an example of.

Choose an answer

Isothermal process

Isochoric process

Adiabatic process

Isobaric process

The work done is isochoric process is.

Choose an answer

Constant

Variable

Zero

Depend upon condition

The entropy of the universe with passage of time is.

Choose an answer

Increases

Decreases

Remain constant

Increases and decreases

If the temperature of a gas is constant then <1/2 mv2> of the molecules of gas will be.

Choose an answer

Constant

Zero

Increase

Decrease

If heat engine absorb 400 J and rejects 200 J heat energy, its efficiency will be.

Choose an answer

25%

50%

70%

100%

Almost all the raw energy is librated from

Choose an answer

Heat

Earth

Light

All of these

Pressure 'P' of a gas is defined as

Choose an answer

F/A

FA

F/V

F/D

Pascal is the unit of

Choose an answer

Pressure

Force

Tension

Weight

For working of heat engine, there must be.

Choose an answer

A source

A sink

either of these

Both of these

More Classes

Other Links

Physics Fsc Part 1 Chapter 11 Online Test 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