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

Generally a temperature scale is established by using certain physical properties of a material which varies

Question # 2

On colliding in a closed container, the gas molecules

Question # 3

What temperature is the same on Celsius scale as well as on Fahrenheit scale?

Question # 4

The process which is carried out at constant temperature is known as

Question # 5

Pressure applied at any point of gas at rest is transmitted equally to all parts of the gas. This is the statement of:

Question # 6

In the formula P = N0KT, N0denotes:

Question # 7

The unit of thermodynamical scale is

Question # 8

The efficiency of carnot engine cannot be 100% or one unless cold reservoir is at

Question # 9

Which of the following is a state variable

Question # 10

The heat required to raise the temperature of one mole of the substance through 1 K is called

Question # 11

The motion of molecules in gases is:

Question # 12

Which of the following is not thermo dynamical function?

Question # 13

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

Question # 14

When the temperature of source and sink of a heat engine become equal entropy change will be

Question # 15

Brownian motion increases due to

Question # 16

Gas constant per molecule is called:

Question # 17

Electromagnetic waves emitted by hot bodies are called:

Question # 18

The volume of universal gas constant R is:

Question # 19

While deriving the equation for pressure of a gas we consider the

Question # 20

Truth of kinetic energy is confirmed by:

Question # 21

First law of thermodynamics is consequence of conservation of

Question # 22

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 # 23

The pressure of gas everywhere inside the vessel will be the same provided the gas is of

Question # 24

An irreversible heat flow from a hot to cold substances of a system, causes the disorder to

Question # 25

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

Question # 26

For the working of a heat engine, there must be

Question # 27

The absolute temperature of the tripple point of water is

Question # 28

The curve representing an isothermal process is called

Question # 29

Rate of diffusion is

Question # 30

We can express the work in term of

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 Carnot heat engine only used
A. isothermal processes
B. adiabatic processes
C. both of them
D. none of them
2 Gas constant per molecule is called:
A. Universal gas constant
B. Stefen's constant
C. Boltzmann constant
D. Gravitation constant
3 The only significant motion possessed by the mono-atomic gas represented is:
A. Translatory
B. Rotatory
C. Vibratory
D. None of these
4 Which quantity is important in stating the entropy of the system
A. initial entropy
B. final entropy
C. change in entropy
D. none of them
5 Heat required to raise the temperature of one mole of a gas through 1 K at constant pressure is called
A. heat capacity
B. specific heat capacity
C. specific heat at constant volume
D. specific heat at constant pressure
6 A process is a reversible process, if the entropy of the system
A. increases
B. decreases
C. remains constant
D. none of them
7 If water in a closed bottle is taken up to the moon and opened, the water gets
A. Freeze
B. Boiled
C. Dissociated into O2and H2
D. Evaporated
8
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
9 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
10 Pressure of a gas at constant volume is proportion to
A. Total energy of gas
B. Average P.E to molecules
C. Average K.E of molecules
D. Total internal energy of gas

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  • Bilal A Munir

    Bilal A Munir

    20 Jun 2018

    Nice

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