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

A reversible cycle is the one in which

Question # 2

Which of the following does not have the same units:

Question # 3

A process in which no heat enters or leaves the system is called

Question # 4

The nature of thermal radiation is similar to:

Question # 5

Absolute zero is considered as that temperature at which:

Question # 6

The number of translation degress of freedom for a diatomic gas is

Question # 7

Amount of heat required to raise the temperature of a body through 1 K is called its

Question # 8

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

Question # 9

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

Question # 10

If the volume of the gas is to be increased by 4 times, then

Question # 11

The volume of a gas will be double of what it is at 0°C (pressure remaining constant) at

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

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

Question # 16

Average KE of a gas molecule has:

Question # 17

No spark plug is needed in

Question # 18

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

Question # 19

The example of irreversible process is

Question # 20

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

Question # 21

The Boltzman constant has the value

Question # 22

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

Question # 23

The curve representing an adiabatic process is called

Question # 24

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

Question # 25

The unit of thermodynamical scale is

Question # 26

Boyle's law is applicable in

Question # 27

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

Question # 28

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

Question # 29

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

Question # 30

The product of the pressure and volume of an ideal gas is

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Sr.# Question Answer
1 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
2 Pressure may be define as _______ per second per unit area:
A. Change in force
B. Change in momentum
C. Change in energy
D. Work done
3 The efficiency of carnot engine cannot be 100% or one unless cold reservoir is at
A. 100 K
B. 273 K
C. 0 K
D. -273 K
4 The volume of a gas will be double of what it is at 0°C (pressure remaining constant) at
A. 546 K
B. 273 K
C. 546°C
D. 273°C
5 A carnot cycle consists of
A. One step
B. two step
C. three steps
D. four steps
6 Generally a temperature scale is established by using certain physical properties of a material which varies
A. nonlinearly with temperature
B. linearly with temperature
C. either of them
D. none of them
7 The rate of change of momentum of a molecule is equal to:
A. Pressure
B. Work
C. Density
D. Force
8 The value of E0in coulomb's law is:
A. 9 x 109Nm2C-2
B. 8.85 x 10-12C2N-1m-2
C. 8.85 x 10-12Nm2C-2
D. 9 x 109C2N-1m-2
9 Hotness and coldness of an object is represented in terms:
A. Heat
B. Temperature
C. Chemical energy
D. None of these
10 First law of thermodynamics tells us that heat energy can be converted into equivalent amount of work, but it is silent about
A. how heat is absorbed
B. how heat extracted
C. how this conversion takes place
D. none of them

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