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

00:00
Question # 1

The kinetic energy of one molecule of a gas at normal temperature and pressure will be (k = 8.31 J/mole K) :

Question # 2

For the working of a heat engine, there must be

Question # 3

Truth of kinetic energy is confirmed by:

Question # 4

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

Question # 5

Electromagnetic waves emitted by hot bodies are called:

Question # 6

The curve representing an adiabatic process is called

Question # 7

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

Question # 8

At the constant temperature, if the value of a given mass of a gas is double, then the density of gas becomes:

Question # 9

Boyle's law is applicable in

Question # 10

Which of the following is not an assumption of kinetic energy

Question # 11

The ideal gas law is

Question # 12

On a cold morning a metal surface will fell colder to touch than a wooden surface, because

Question # 13

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

Question # 14

Pressure exerted by a gas is

Question # 15

The efficiency of diesel engine is

Question # 16

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

Question # 17

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

Question # 18

Energy gas behaves like an ideal gast at

Question # 19

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

Question # 20

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

Question # 21

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

Question # 22

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

Question # 23

Which of the following is not thermo dynamical function?

Question # 24

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

Question # 25

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

Question # 26

Absolute zero is considered as that temperature at which:

Question # 27

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

Question # 28

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

Question # 29

In an ideal gas, the molecules have:

Question # 30

The nature of thermal radiation is similar to:

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 The nature of thermal radiation is similar to:
A. Ultraviolet rays
B. Light rays
C. Both of them
D. None of these
2 The number of translation degress of freedom for a diatomic gas is
A. 2
B. 3
C. 5
D. 6
3 The absolute temperature of the tripple point of water is
A. 100°C
B. 4°C
C. 373 K
D. 273.16 K
4 In the formula P = N0KT, N0denotes:
A. Number of molecules per unit per volume
B. Number of moles
C. Number of molecules
D. None of these
5 When heat is added into the system then change in entropy is
A. negative
B. positive
C. zero
D. any one of them
6 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
7 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
8 If 42 J heat is transferred to the system and the work done by the system is 32 J then what will be the change in internal energy
A. 0 J
B. 2 J
C. 5 J
D. 10 J
9 Pressure exerted by a gas is
A. Independent of density of the gas
B. Inversely proportional to the density of the gas
C. Directly proportional to the square of the density of the gas
D. Directly proportional to the density of the gas
10 Sadi carnot described an ideal heat engine in
A. 1820
B. 1840
C. 1860
D. 1880

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  • Bilal A Munir

    Bilal A Munir

    20 Jun 2018

    Nice

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