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

A succession of events which bring the system back to its initial condition is called

Question # 2

Which of the following does not have the same units:

Question # 3

Which quantity is important in stating the entropy of the system

Question # 4

The earliest heat engine was

Question # 5

The curve representing an adiabatic process is called

Question # 6

The bicycle pump provides a good example of

Question # 7

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

Question # 8

The relationship between Boltzmann constant k with R and NAis given as:

Question # 9

The nature of thermal radiation is similar to:

Question # 10

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

Question # 11

We cannot utilize the heat contents of oceans and atmosphere because

Question # 12

The concept of entropy was introduced into the study of thermodynamics in

Question # 13

Gas constant per molecule is called:

Question # 14

Internal energy is the sum of all the forms of

Question # 15

In the formula P = N0KT, N0denotes:

Question # 16

First law of thermodynamics is consequence of conservation of

Question # 17

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

Question # 18

Absolute temperature can be calculated by

Question # 19

The internal energy of an ideal gas system is generally the

Question # 20

For the working of a heat engine, there must be

Question # 21

Energy gas behaves like an ideal gast at

Question # 22

A process which can be retraced in exactly reverse order, without producing any change in the surroundings is called

Question # 23

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

Question # 24

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

Question # 25

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

Question # 26

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

Question # 27

A real gas can be approximated to an ideal gas at

Question # 28

In an adiabatic expansion, the temperature of the gas

Question # 29

In a heat engine, heat is supplied by the

Question # 30

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

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Sr.# Question Answer
1 The volume of universal gas constant R is:
A. 8.314 J/K mole K
B. 8314 J/K mole K
C. 8.314 J/mole K
D. None of these
2 The absolute temperature of the tripple point of water is
A. 100°C
B. 4°C
C. 373 K
D. 273.16 K
3 The basis to define a temperature scale that is independent of material properties is provided by
A. carbon cycle
B. nitrogen cycle
C. Carnot cycle
D. irreversible cycle
4 If the volume of the gas is to be increased by 4 times, then
A. Temperature and pressure must be doubled
B. At constant P the temperature must be increased by 4 times
C. At constant T the pressure must be increased by four times
D. It cannot be increased
5 The curve representing an isothermal process is called
A. adiabat
B. isotherm
C. fixed temperature
D. none of them
6 If the formula PV = nRT, n denotes:
A. Number of molecules per unit volume
B. Number of moles
C. Number of molecules
D. None of these
7 While deriving equation of pressure by kinetic theory of gases, we take into account:
A. Only linear motion of molecules
B. Only rotational motion
C. Only vibratory motion
D. All of these
8 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
9 In an adiabatic expansion, the temperature of the gas
A. increases
B. becomes zero
C. decreases
D. decreases rapidly
10 The pressure of gas everywhere inside the vessel will be the same provided the gas is of
A. Non-uniform density
B. uniform density
C. high density
D. low density

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