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

When two objects are rubbed together, their internal energy

Question # 2

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

Question # 3

In thermodynamics, internal energy is the function of

Question # 4

In the formula P = N0KT, N0denotes:

Question # 5

Heat travels through vacuum by

Question # 6

First law of thermodynamics is consequence of conservation of

Question # 7

The number of translation degress of freedom for a diatomic gas is

Question # 8

The internal energy of a system does not depend upon the

Question # 9

A carnot cycle consists of

Question # 10

At constant volume temperature is increased. Then

Question # 11

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

Question # 12

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

Question # 13

The nature of thermal radiation is similar to:

Question # 14

A real gas can be approximated to an ideal gas at

Question # 15

Good absorbers of heat are

Question # 16

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

Question # 17

If a molecule with momentum mv strikes a wall and rebound then the change in momentum will be:

Question # 18

Hotness and coldness of an object is represented in terms:

Question # 19

Energy gas behaves like an ideal gast at

Question # 20

Which of the following does not have the same units:

Question # 21

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

Question # 22

In an adiabatic expansion, the temperature of the gas

Question # 23

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

Question # 24

Triple point of water is

Question # 25

The heat required to raise the temperature of one mole of the gas through 1 K at constant volume is called

Question # 26

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 # 27

Which of the following is not thermo dynamical function?

Question # 28

Specific heat at constant pressure is greater than the specific heat at constant volume because

Question # 29

We can express the work in term of

Question # 30

Rate of diffusion is

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 Rate of diffusion is
A. Faster in solids than in liquids and gases
B. Faster in liquids than in solids and gases
C. Equal to solids, liquids and gases
D. Faster in gases than in liquids and solids
2 If a liquid is heated in weightlessness, the heat is transmitted through
A. Conduction
B. Convection
C. Radiation
D. Neither, because the liquid cannot be heated in weightlessness
3 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
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 A gas is compressed adiabatically till its temperature is double. The ratio of its final volume to initial volume will be
A. 1/2
B. More than 1/2
C. Less than 1/2
D. Between 1 and 2
6 In an adiabatic expansion, the temperature of the gas
A. increases
B. becomes zero
C. decreases
D. decreases rapidly
7 Since the absolute scale is independent of the property of the working substance, hence, can be applied at
A. very high temperature
B. very low temperature
C. any one of them
D. none of them
8 Absolute zero is considered as that temperature at which:
A. All liquid become gases
B. All gases become liquid
C. Water freezes
D. None of these
9 The only significant motion possessed by the mono-atomic gas represented is:
A. Translatory
B. Rotatory
C. Vibratory
D. None of these
10 Truth of kinetic energy is confirmed by:
A. Diffusion of gases
B. Brownian motion
C. Both A and B
D. None of these

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  • Bilal A Munir

    Bilal A Munir

    20 Jun 2018

    Nice

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