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

  • Total Questions30

  • Time Allowed30

Start Test Download PDF

Physics ECAT Pre Engineering Chapter 11 Heat & Thermodynamics

00:00
Question # 1

In a heat engine, heat is supplied by the

Question # 2

If the formula PV = nRT, n denotes:

Question # 3

The value of E0in coulomb's law is:

Question # 4

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

Question # 5

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

Question # 6

In an adiabatic expansion, the temperature of the gas

Question # 7

The nature of thermal radiation is similar to:

Question # 8

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

Question # 9

Which quantity is important in stating the entropy of the system

Question # 10

The temperature of gas is produced by

Question # 11

Internal energy is the sum of all the forms of

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

A reversible cycle is the one in which

Question # 16

A diatomic gas molecule has

Question # 17

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

Question # 18

The coefficient of linear expansion of iron is 0.000011 per°K. An iron rod is 10 metre long at 27°C. The length of the rod will be decreased by 1.1 mm when the temperature of the rod changes to

Question # 19

An amount of water of mass 20 g at 0°C is mixed with 40 g of water at 10°C. Final temperature of mixture is

Question # 20

The internal energy of a system does not depend upon the

Question # 21

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

Question # 22

The ideal gas law is

Question # 23

First law of thermodynamic is special case of

Question # 24

Absolute temperature can be calculated by

Question # 25

In thermodynamics, internal energy is the function of

Question # 26

We cannot utilize the heat contents of oceans and atmosphere because

Question # 27

The internal energy of an ideal gas system is generally the

Question # 28

It is impossible to devise a processes which may convert heat, extracted from a single reservoir, entirely into work without leaving any change in the working system. This is the statement of

Question # 29

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

Question # 30

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

Submit

Prepare Complete Set Wise Physics ECAT Pre Engineering Chapter 11 Heat & Thermodynamics MCQs Online With Answers


Topic Test

00:00
Submit

Top Scorers Of Physics ECAT Pre Engineering Chapter 11 Heat & Thermodynamics MCQ`s Test

  • D
    Deuspeu 25 - Sep - 2024 02 Min 03 Sec 115/120
  • M
    M Umer Arain 19 - Nov - 2024 00 Min 11 Sec 105/120
  • D
    Dr Shahida 01 - Nov - 2024 11 Min 12 Sec 100/120
  • N
    Nitalaya Hassan 24 - Dec - 2024 04 Min 02 Sec 95/120
  • G
    Ghulam Murtaza 12 - Sep - 2024 20 Min 35 Sec 95/120
  • A
    Akshey Lohana 27 - Aug - 2024 14 Min 26 Sec 90/120
  • U
    Umair Rajput 09 - Sep - 2024 15 Min 22 Sec 85/120
  • I
    It's me Sm 26 - Aug - 2024 04 Min 12 Sec 80/120
  • S
    Sania Ahmed 16 - Dec - 2024 04 Min 58 Sec 75/120
  • K
    Kalsoom Memon 20 - Sep - 2024 06 Min 11 Sec 75/120
  • S
    Sanjna Uttwani 21 - Sep - 2024 05 Min 22 Sec 70/120
  • S
    Sudais Khan 12 - Jul - 2024 07 Min 45 Sec 70/120
  • A
    Aakash Rind 07 - Dec - 2024 06 Min 58 Sec 65/120
  • A
    Ali imtiaz 01 - Oct - 2024 07 Min 18 Sec 65/120
  • R
    Rashida Latif 13 - Jan - 2025 07 Min 37 Sec 65/120

ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 Brownian motion increases due to
A. Increase in size of Brownian particle
B. Increase in temperature of medium
C. Increase in density of medium
D. Increase in viscosity of medium
2 On the power stroke, a spark fires the mixtures causing a rapid increase in pressure and temperature and the burning mixture expands
A. adiabatically
B. isothermally
C. isochorically
D. isobarically
3 In an adiabatic process the work is done at the expense of the
A. energy supplied to the system
B. energy gained from the surroundings
C. internal energy
D. none of them
4 10 c.c. each of oxygen and hydrogen are kept in separate flasks. Then which of the following relations is correct?
A. Each have same number of molecules
B. Don't have same number of molecules
C. Can't be predicted
D. None
5 One kilogram of different substances contain
A. same number of molecules
B. different number of molecules
C. may be same or different
D. none of them
6 Two samples A and B of a gas initially of the same temperature and pressure are compressed from a volume V to a volume V/2 such that A is compressed isothermally and B adiabatically. The final pressure
A. A greater than than of B
B. A is equal to that of B
C. A is less than that of B
D. A is twice the pressure of B
7 A carnot cycle consists of
A. One step
B. two step
C. three steps
D. four steps
8 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 %
9 The curve representing an adiabatic process is called
A. isotherm
B. adiabat
C. adiable
D. none of them
10 The concept of entropy was introduced into the study of thermodynamics in
A. 1856
B. 1865
C. 1656
D. 1685

Test Questions

Is this page helpful?

Share your comments & questions here

Guest
  • Bilal A Munir

    Bilal A Munir

    20 Jun 2018

    Nice

    Like
    Reply