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

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Question # 1

Good absorbers of heat are

Question # 2

Pressure of a gas at constant volume is proportion to

Question # 3

If 42 J heat is transferred to the system and the work done by the system is 32 J then what will be the change in internal energy

Question # 4

Truth of kinetic energy is confirmed by:

Question # 5

Energy gas behaves like an ideal gast at

Question # 6

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 # 7

Which of the following is not thermo dynamical function?

Question # 8

The absolute temperature of the tripple point of water is

Question # 9

According to kinetic theory of gases, molecules of a gas behave like

Question # 10

On a cold morning a metal surface will fell colder to touch than a wooden surface, because

Question # 11

Pressure may be define as _______ per second per unit area:

Question # 12

We cannot utilize the heat contents of oceans and atmosphere because

Question # 13

The state in which ice, water and vapour coexists in equilibrium is called

Question # 14

In the formula P = N0KT, N0denotes:

Question # 15

The length of a metallic rod is 5 meter at 100°C. The coefficient of cubical expansion of the metal will be

Question # 16

A real gas can be approximated to an ideal gas at

Question # 17

The efficiency of diesel engine is

Question # 18

Brownian motion increases due to

Question # 19

If an amount of heat enters the system it could

Question # 20

On colliding in a closed container, the gas molecules

Question # 21

Heat travels through vacuum by

Question # 22

The work done by the system on its environment is considered as

Question # 23

If water in a closed bottle is taken up to the moon and opened, the water gets

Question # 24

The volume of universal gas constant R is:

Question # 25

If a molecule with momentum mv strikes a wall and rebound then the change in momentum will be:

Question # 26

The heat required to raise the temperature of one mole of the gas through 1 K at constant volume is called

Question # 27

A gas is compressed adiabatically till its temperature is double. The ratio of its final volume to initial volume will be

Question # 28

In case of an ideal gas, the P.E associated with its molecule is

Question # 29

If the formula PV = nRT, n denotes:

Question # 30

On the compression stroke of the petrol engine, the inlet value is closed and the mixture is compressed

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 The earliest heat engine was
A. petrol engine
B. diesel engine
C. electric engine
D. steam engine
2 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
3 The product of the pressure and volume of an ideal gas is
A. A constant
B. Approximately equal to the universal gas constant
C. Directly proportional to its temperature
D. Inversely proportional to its temperature
4
During the whole carnot cycle
A. Thermal equilibrium is maintained
B. mechanical equilibrium is maintained
C. both the thermal and mechanical equilibriumis maintained
D. both the thermal and mechanical equilibrium is not maintained
5 The absolute temperature for an ideal gas is
A. directly proportional to the rotational K.E of gas molecules
B. directly proportional to the vibrational K.E of gas molecules
C. directly proportional to the average translational K.E.of gas molecules
D. directly proportional to the P.E. of gas molecules
6 Real gases strictly obey gas law at:
A. High pressure and low temperatures
B. Low pressures and high temperatures
C. High pressures and high temperatures
D. None of these
7 We can express the work in term of
A. directly measurable variables
B. indirectly measurable variables
C. either of them
D. both of them
8 Absolute temperature can be calculated by
A. Means squares velocity
B. Motion of the molecule
C. Both A and B
D. None of these
9 The bicycle pump provides a good example of
A. first law of thermodynamics
B. second law of thermodynamics
C. third law of thermodynamics
D. none of them
10 In which process the condition for the application of Boyle's law on the gas is fulfilled
A. isochoric process
B. adiabatic process
C. isothermal process
D. none of them

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  • Bilal A Munir

    Bilal A Munir

    20 Jun 2018

    Nice

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