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

At constant temperature, if the density of the gas is increased, its pressure will:

Question # 2

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

Question # 3

An isochoric process is one which take place at

Question # 4

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

Question # 5

At constant temperature, on increasing the pressure of a gas by 5%, its volume. The final temperature of the gas will be

Question # 6

No spark plug is needed in

Question # 7

Which of the following is a state variable

Question # 8

The length of a metallic rod is 5 meter at 100°C. The coefficient of cubical expansion of the metal will be

Question # 9

The heat required to raise the temperature of one mole of the substance through 1 K is called

Question # 10

The absolute temperature for an ideal gas is

Question # 11

The work done by the system on its environment is considered as

Question # 12

Which of the following is not thermo dynamical function?

Question # 13

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

Question # 14

The highest efficiency of a heat engine whose low temperature is 17°C and the high temperature is 200°C is

Question # 15

Sadi carnot described an ideal heat engine in

Question # 16

Good absorbers of heat are

Question # 17

Energy gas behaves like an ideal gast at

Question # 18

Truth of kinetic energy is confirmed by:

Question # 19

The curve representing an isothermal process is called

Question # 20

Pressure of a gas at constant volume is proportion to

Question # 21

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

Question # 22

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

Question # 23

When heat is added into the system then change in entropy is

Question # 24

Maximum density of H2O is at the temperature

Question # 25

The volume of given mass of a gas will be doubled at atmosphere pressure if the temperature of the gas is changed from 150°C to

Question # 26

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

Question # 27

The example of reversible process is

Question # 28

The bicycle pump provides a good example of

Question # 29

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

Question # 30

The only significant motion possessed by the mono-atomic gas represented is:

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 In all natural processes where heat flows from one system to another, there is always a net
A. decrease in entropy
B. increase in entropy
C. decrease or increase in entropy
D. none of them
2 The earliest heat engine was
A. petrol engine
B. diesel engine
C. electric engine
D. steam engine
3 Triple point of water is
A. 273.16°F
B. 372.16K
C. 273.16°F
D. 273.16
4 The rate of change of momentum of a molecule is equal to:
A. Pressure
B. Work
C. Density
D. Force
5 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
6 If the ratio of densities of two gases is 1:4, then the ratio of their rates of diffusion into one another is
A. 2 : 1
B. 4 : 1
C. 1 : 4
D. 3 : 4
7 A diatomic gas molecule has
A. translational energy
B. rotaional energy
C. vibrational energy
D. all of them
8 The work done by the system on its environment is considered as
A. positive
B. negative
C. zero
D. any one of them
9 In which process the condition for the application of Boyle's law on the gas is fulfilled
A. isochoric process
B. adiabatic process
C. isothermal process
D. none of them
10 The ideal gas law is
A. P = nRT
B. V = nRT
C. PV =RT
D. PV =nRT

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  • Bilal A Munir

    Bilal A Munir

    20 Jun 2018

    Nice

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