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

Tick the correct pair when M denotes the molecular mass and other symbols carry usual meanings:

Question # 2

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

Question # 3

In thermodynamics, internal energy is the function of

Question # 4

In the formula P = N0KT, N0denotes:

Question # 5

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

Question # 6

The second law of thermodynamics is concerned with the circumstances in which

Question # 7

The nature of thermal radiation is similar to:

Question # 8

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

Question # 9

We cannot utilize the heat contents of oceans and atmosphere because

Question # 10

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

Question # 11

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

Question # 12

Brownian motion increases due to

Question # 13

Which of the following does not have the same units:

Question # 14

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

Question # 15

Rice takes longest to cook

Question # 16

The earliest heat engine was

Question # 17

If N is the total number of molecules and V is the volume of the container, then the expression for the pressure of gas is

Question # 18

The pressure of gas everywhere inside the vessel will be the same provided the gas is of

Question # 19

Hydrogen and helium of same volume V at same temperature T and same pressure P are mixed to have same volume V. The resulting pressure of the mixtures will be

Question # 20

A carnot cycle consists of

Question # 21

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

Question # 22

In the theory of dimensional analysis, heat may be properly represented by:

Question # 23

When two objects are rubbed together, their internal energy

Question # 24

When heat is removed from the system

Question # 25

The absolute temperature for an ideal gas is

Question # 26

A gas which strictly obeys the gas laws under all conditions of temperature and pressure is called:

Question # 27

On the exaust stroke, the outlet values opens. The residual gases are expelled and piston moves

Question # 28

Internal energy is the sum of all the forms of

Question # 29

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

Question # 30

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

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 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
2 The ideal gas law is
A. P = nRT
B. V = nRT
C. PV =RT
D. PV =nRT
3 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
4 A process is a reversible process, if the entropy of the system
A. increases
B. decreases
C. remains constant
D. none of them
5 What temperature is the same on Celsius scale as well as on Fahrenheit scale?
A. 32°C
B. -32°C
C. -40°C
D. -212°C
6 The concept of entropy was introduced into the study of thermodynamics in
A. 1856
B. 1865
C. 1656
D. 1685
7 Electromagnetic waves emitted by hot bodies are called:
A. Photoelectrons
B. Alpha rays
C. Thermal radiation
D. None of these
8 The example of reversible process is
A. an explosion
B. changes occur suddenly
C. slow compression of a gas
D. all of them
9 The heat required to raise the temperature of one mole of the gas through 1 K at constant volume is called
A. heat capacity
B. specific heat capacity
C. molar specific heat
D. molar specific heat at constant volume
10 The absolute temperature of the tripple point of water is
A. 100°C
B. 4°C
C. 373 K
D. 273.16 K

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  • Bilal A Munir

    Bilal A Munir

    20 Jun 2018

    Nice

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