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

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

Question # 2

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

Question # 3

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

Question # 4

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

Question # 5

In an adiabatic expansion, the temperature of the gas

Question # 6

At absolute temperature, the kinetic energy of the molecules

Question # 7

Pressure of a gas at constant volume is proportion to

Question # 8

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

Question # 9

The value of E0in coulomb's law is:

Question # 10

Gas constant per molecule is called:

Question # 11

Tick the correct pair when M denotes the molecular mass and other symbols carry usual meanings:

Question # 12

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

Question # 13

The absolute temperature of the tripple point of water is

Question # 14

The bicycle pump provides a good example of

Question # 15

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

Question # 16

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

Question # 17

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

Question # 18

Maximum density of H2O is at the temperature

Question # 19

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

Question # 20

Rice takes longest to cook

Question # 21

In an ideal gas, the molecules have:

Question # 22

Absolute temperature can be calculated by

Question # 23

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

Question # 24

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

Question # 25

Which quantity is important in stating the entropy of the system

Question # 26

Which of the following is not thermo dynamical function?

Question # 27

The disorder in the system increases due to the

Question # 28

The internal energy of a system does not depend upon the

Question # 29

The temperature scale approved in SI units is:

Question # 30

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

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 Pressure applied at any point of gas at rest is transmitted equally to all parts of the gas. This is the statement of:
A. Newton's second law
B. Pascal's law
C. Carnot theorem
D. Second law of thermodynamics
2 On colliding in a closed container, the gas molecules
A. Transfer momentum to the walls
B. Momentum becomes zero
C. Move in opposite directions
D. Perform Brownian motion
3 First law of thermodynamic is special case of
A. Law of conservation of energy
B. Charle's law
C. Law of conservation of mass
D. Boyle's law
4 At constant temperature, on increasing the pressure of a gas by 5%, its volume. The final temperature of the gas will be
A. 81 K
B. 355 K
C. 627 K
D. 627°C
5 The internal energy of an ideal gas system is generally the
A. translational K.E of molecules
B. vibrational K.E of molecules
C. rotational K.E of molecules
D. all of them
6 The ideal gas law is
A. P = nRT
B. V = nRT
C. PV =RT
D. PV =nRT
7 The Boltzman constant has the value
A. 1.38 x 10-23JK-1
B. 1.28 x 10-23JK-1
C. 1.38 x 10-26JK-1
D. 1.28 x 10-26JK-1
8 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
9 Electromagnetic waves emitted by hot bodies are called:
A. Photoelectrons
B. Alpha rays
C. Thermal radiation
D. None of these
10 Efficiency of carnot engine is independent of the
A. temperature of sink
B. temperature of source
C. nature of the working substances
D. none of them

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  • Bilal A Munir

    Bilal A Munir

    20 Jun 2018

    Nice

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