ECAT Pre General Science Physics Chapter 11 MCQ Test With Answer

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

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

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ECAT Pre General Science Physics Chapter 11 Heat & Thermodynamics

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Question # 1

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

Question # 2

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

Question # 3

For making cooking utensils, which of the following pairs of properties is most suited?

Question # 4

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

Question # 5

At constant volume temperature is increased. Then

Question # 6

The temperature of gas is produced by

Question # 7

When two objects come to common temperature, the body is said to be in:

Question # 8

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

Question # 9

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

Question # 10

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

Question # 11

Since the absolute scale is independent of the property of the working substance, hence, can be applied at

Question # 12

Sadi carnot described an ideal heat engine in

Question # 13

The pressure exerted by the gas is

Question # 14

The value of E0in coulomb's law is:

Question # 15

In thermodynamics, internal energy is the function of

Question # 16

The ideal gas law is

Question # 17

If a liquid is heated in weightlessness, the heat is transmitted through

Question # 18

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

Question # 19

If a process cannot be retraced in the backward direction by reversing the controlling factors, it is

Question # 20

Good absorbers of heat are

Question # 21

While deriving equation of pressure by kinetic theory of gases, we take into account:

Question # 22

It is impossible to devise a processes which may convert heat, extracted from a single reservoir, entirely into work without leaving any change in the working system. This is the statement of

Question # 23

We can express the work in term of

Question # 24

If the formula PV = nRT, n denotes:

Question # 25

Specific heat at constant pressure is greater than the specific heat at constant volume because

Question # 26

At constant temperature, on increasing the pressure of a gas by 5%, its volume. The final temperature of the gas will be

Question # 27

First law of thermodynamic is special case of

Question # 28

The percentage of available heat energy converted into work by a diesel engine is roughly

Question # 29

We cannot utilize the heat contents of oceans and atmosphere because

Question # 30

Efficiency of carnot engine is independent of the

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 If an amount of heat enters the system it could
A. decrease the internal energy
B. not change the internal energy
C. increase the internal energy
D. none of them
2 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
3 If a system undergoes a natural process it will go in the direction that causes the entropy of the system plus the environment to increase, this is another statement of
A. second law thermodynamics
B. first law of thermodynamics
C. third law of thermodynamics
D. none of them
4 A succession of events which bring the system back to its initial condition is called
A. reversible process
B. irreversible process
C. a cycle
D. none of them
5 The process which is carried out at constant temperature is known as
A. adiabatic process
B. isothermal process
C. isochoric process
D. none of them
6 Triple point of water is
A. 273.16°F
B. 372.16K
C. 273.16°F
D. 273.16
7 A process is a reversible process, if the entropy of the system
A. increases
B. decreases
C. remains constant
D. none of them
8 If the ratio of densities of two gases is 1:4, then the ratio of their rates of diffusion into one another is
A. 2 : 1
B. 4 : 1
C. 1 : 4
D. 3 : 4
9 Melting point of ice
A. Increases with increasing pressure
B. Decreases with increasing pressure
C. Is independent of pressure
D. Is proportional to pressure
10 The state in which ice, water and vapour coexists in equilibrium is called
A. zero degree celsius
B. zero degree fahrenheit
C. absolute zero
D. 373 K

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