ECAT Pre Engineering Physics Chapter 11 MCQ Test With Answer

MCQ's Test For Physics ECAT Pre Engineering Chapter 11 Heat & Thermodynamics

Try The MCQ's Test For Physics ECAT Pre Engineering Chapter 11 Heat & Thermodynamics

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Physics ECAT Pre Engineering Chapter 11 Heat & Thermodynamics

00:00
Question # 1

The motion of molecules in gases is:

Question # 2

Brownian motion increases due to

Question # 3

If R is gas constant for 1 gram mole, Cpand Cvare specific heat for a solid then

Question # 4

Absolute temperature can be calculated by

Question # 5

No spark plug is needed in

Question # 6

We can express the work in term of

Question # 7

Heat travels through vacuum by

Question # 8

An amount of water of mass 20 g at 0°C is mixed with 40 g of water at 10°C. Final temperature of mixture is

Question # 9

Which of the following is not an assumption of kinetic energy

Question # 10

Melting point of ice

Question # 11

A heat engine is that which converts

Question # 12

A gas which strictly obeys the gas laws under all conditions of temperature and pressure is called:

Question # 13

If N is the total number of molecules and V is the volume of the container, then the expression for the pressure of gas is

Question # 14

The only significant motion possessed by the mono-atomic gas represented is:

Question # 15

Boyle's law is applicable in

Question # 16

The example of reversible process is

Question # 17

Generally a temperature scale is established by

Question # 18

We cannot utilize the heat contents of oceans and atmosphere because

Question # 19

In the theory of dimensional analysis, heat may be properly represented by:

Question # 20

The efficiency of diesel engine is

Question # 21

The behaviour of gases is well accounted by the kinetic theory based on

Question # 22

10 c.c. each of oxygen and hydrogen are kept in separate flasks. Then which of the following relations is correct?

Question # 23

The second law of thermodynamics is concerned with the circumstances in which

Question # 24

Rate of diffusion is

Question # 25

If the distance between two charges is doubled, the force between them will become:

Question # 26

Two samples A and B of a gas initially of the same temperature and pressure are compressed from a volume V to a volume V/2 such that A is compressed isothermally and B adiabatically. The final pressure

Question # 27

In an adiabatic process the work is done at the expense of the

Question # 28

In the formula P = N0KT, N0denotes:

Question # 29

Electromagnetic waves emitted by hot bodies are called:

Question # 30

Carnot heat engine only used

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 An irreversible heat flow from a hot to cold substances of a system, causes the disorder to
A. decrease
B. remains the same
C. increase
D. any one of them
2 Which of the following is a state variable
A. entropy
B. pressure
C. volume
D. all of them
3 In an adiabatic expansion, the temperature of the gas
A. increases
B. becomes zero
C. decreases
D. decreases rapidly
4 What temperature is the same on Celsius scale as well as on Fahrenheit scale?
A. 32°C
B. -32°C
C. -40°C
D. -212°C
5 The length of a metallic rod is 5 meter at 100°C. The coefficient of cubical expansion of the metal will be
A. 2.0 x 10-5/°C
B. 4.0x10-5/°C
C. 6.0x10-5/°C
D. 2.33x10-5/°C
6 R.M.S velocity of a particle is V at pressure P. If pressure increases by two times, then R.M.S velocity becomes
A. 2V
B. 3V
C. 0.5V
D. V
7 The temperature of gas is produced by
A. At potential energy of its molecules
B. The kinetic energy of its molecules
C. The attractive force between its molecules
D. The repulsive force between its molecules
8 Amount of heat required to raise the temperature of a body through 1 K is called its
A. Specific heat
B. Water equivalent
C. Thermal capacity
D. Entropy
9 At constant temperature, if the density of the gas is increased, its pressure will:
A. One kg of a substance
B. Unit volume of a substance
C. One mole of a substance
D. None of these
10 In a heat engine, heat is supplied by the
A. cold reservoir
B. sink
C. hot reservoir
D. none of them

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  • Bilal A Munir

    Bilal A Munir

    20 Jun 2018

    Nice

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