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

At O° K which of the following properties of a gas will be zero?

Question # 2

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

Question # 3

A typical four stroke petrol engine undergoes how many successive processes in each cycle

Question # 4

Real gases strictly obey gas law at:

Question # 5

In the formula P = N0KT, N0denotes:

Question # 6

If water in a closed bottle is taken up to the moon and opened, the water gets

Question # 7

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

Question # 8

For the working of a heat engine, there must be

Question # 9

Absolute temperature can be calculated by

Question # 10

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

Question # 11

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

Question # 12

Boyle's law is applicable in

Question # 13

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

Question # 14

Which of the following is not an example of adiabatic process

Question # 15

Heat travels through vacuum by

Question # 16

Gas constant per molecule is called:

Question # 17

In the reverse process, the working substance passes through the same stages as in the direct process and

Question # 18

Average KE of a gas molecule has:

Question # 19

At what temperature the adiabatic change is equivalent to the isothermal change?

Question # 20

The temperature of gas is produced by

Question # 21

The efficiency of petrol engine is usually not more than 25% to 30% because of

Question # 22

During the whole carnot cycle

Question # 23

Which of the following does not have the same units:

Question # 24

The pressure exerted by the gas is

Question # 25

In which process the condition for the application of Boyle's law on the gas is fulfilled

Question # 26

A carnot cycle consists of

Question # 27

The volume of given mass of a gas will be doubled at atmosphere pressure if the temperature of the gas is changed from 150°C to

Question # 28

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

Question # 29

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

Question # 30

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

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 At O° K which of the following properties of a gas will be zero?
A. Kinetic energy
B. Potential energy
C. Vibrational energy
D. Density
2 The percentage of available heat energy converted into work by a petrol engine is roughly
A. 35 %
B. 40 %
C. 35 to 40 %
D. 25 %
3 The length of a metallic rod is 5 meter at 100°C. The coefficient of cubical expansion of the metal will be
A. 2.0 x 10-5/°C
B. 4.0x10-5/°C
C. 6.0x10-5/°C
D. 2.33x10-5/°C
4 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
5 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
6 A heat engine is that which converts
A. mechanical energy into thermal energy
B. thermal energy into mechanical energy
C. K.E into potential energy
D. heat energy into light energy
7 In the theory of dimensional analysis, heat may be properly represented by:
A. ML2T-2
B. MT-2
C. ML-1T-1
D. None of these
8 The absolute temperature of the tripple point of water is
A. 100°C
B. 4°C
C. 373 K
D. 273.16 K
9 First law of thermodynamics is consequence of conservation of
A. Work
B. Energy
C. Heat
D. All of these
10 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

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  • Bilal A Munir

    Bilal A Munir

    20 Jun 2018

    Nice

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