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

On the compression stroke of the petrol engine, the inlet value is closed and the mixture is compressed

Question # 2

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

Question # 3

Adiabatic change occurs when the gas

Question # 4

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

Question # 5

The internal energy of a system does not depend upon the

Question # 6

Melting point of ice

Question # 7

If the ratio of densities of two gases is 1:4, then the ratio of their rates of diffusion into one another is

Question # 8

Two metal rods A and B have their initial lengths in the ratio 2 : 3 and coefficients of linear expansion in the ratio 4 : 3. When they are heated through same temperature difference the ratio of their linear expansion is

Question # 9

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

Question # 10

In case of an ideal gas, the P.E associated with its molecule is

Question # 11

The pressure exerted by the gas is

Question # 12

A process is a reversible process, if the entropy of the system

Question # 13

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

Question # 14

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

Question # 15

Average KE of a gas molecule has:

Question # 16

Sadi carnot described an ideal heat engine in

Question # 17

For making cooking utensils, which of the following pairs of properties is most suited?

Question # 18

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

Question # 19

Maximum density of H2O is at the temperature

Question # 20

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

Question # 21

First law of thermodynamics tells us that heat energy can be converted into equivalent amount of work, but it is silent about

Question # 22

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

Question # 23

The bicycle pump provides a good example of

Question # 24

We cannot utilize the heat contents of oceans and atmosphere because

Question # 25

The example of irreversible process is

Question # 26

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

Question # 27

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

Question # 28

Brownian motion increases due to

Question # 29

Which of the following does not have the same units:

Question # 30

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

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 Internal energy is the sum of all the forms of
A. K.E
B. P.E
C. both of them
D. none of them
2 Which quantity is important in stating the entropy of the system
A. initial entropy
B. final entropy
C. change in entropy
D. none of them
3 If an amount of heat enters the system it could
A. decrease the internal energy
B. not change the internal energy
C. increase the internal energy
D. none of them
4 The internal energy of a system does not depend upon the
A. initial state of the system
B. final state of the system
C. path
D. none of them
5 The curve representing an isothermal process is called
A. adiabat
B. isotherm
C. fixed temperature
D. none of them
6 A carnot cycle consists of
A. One step
B. two step
C. three steps
D. four steps
7 For making cooking utensils, which of the following pairs of properties is most suited?
A. Low specific heat and high conductivity
B. Low specific heat and low conductivity
C. High specific heat and high conductivity
D. High specific heat and low conductivity
8 In the study of thermodynamics, which gas is considered as the working substance
A. real gas
B. ideal gas
C. any gas may be ideal or real
D. none of them
9 A diatomic gas molecule has
A. translational energy
B. rotaional energy
C. vibrational energy
D. all of them
10 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

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  • Bilal A Munir

    Bilal A Munir

    20 Jun 2018

    Nice

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