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

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

Question # 2

A gas is compressed adiabatically till its temperature is double. The ratio of its final volume to initial volume will be

Question # 3

The bicycle pump provides a good example of

Question # 4

The efficiency of carnot engine cannot be 100% or one unless cold reservoir is at

Question # 5

Truth of kinetic energy is confirmed by:

Question # 6

The absolute temperature for an ideal gas is

Question # 7

The internal energy of an ideal gas system is generally the

Question # 8

The behaviour of gases is well accounted by the kinetic theory based on

Question # 9

When heat is removed from the system

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

Boyle's law is applicable in

Question # 12

On colliding in a closed container, the gas molecules

Question # 13

If the formula PV = nRT, n denotes:

Question # 14

Pressure of a gas at constant volume is proportion to

Question # 15

In which process the condition for the application of Boyle's law on the gas is fulfilled

Question # 16

According to the second law, which is must to produce work

Question # 17

Generally a temperature scale is established by using certain physical properties of a material which varies

Question # 18

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

Question # 19

The earliest heat engine was

Question # 20

On a cold morning a metal surface will fell colder to touch than a wooden surface, because

Question # 21

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

Question # 22

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

Question # 23

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

Question # 24

Maximum density of H2O is at the temperature

Question # 25

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 # 26

Absolute temperature can be calculated by

Question # 27

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

Question # 28

At what temperature the adiabatic change is equivalent to the isothermal change?

Question # 29

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

Question # 30

Which of the following is not thermo dynamical function?

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 Pressure applied at any point of gas at rest is transmitted equally to all parts of the gas. This is the statement of:
A. Newton's second law
B. Pascal's law
C. Carnot theorem
D. Second law of thermodynamics
2 While deriving the equation for pressure of a gas we consider the
A. rotational motion of molecules
B. vibrational motion of molecules
C. linear motion of molecules
D. all of them
3 Pressure exerted by a gas is
A. Independent of density of the gas
B. Inversely proportional to the density of the gas
C. Directly proportional to the square of the density of the gas
D. Directly proportional to the density of the gas
4 The work done on the system by the environment is considered as
A. positive
B. negative
C. zero
D. any one of them
5 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
A. 0 J
B. 2 J
C. 5 J
D. 10 J
6 A real gas can be approximated to an ideal gas at
A. Low density
B. High pressure
C. High density
D. Low temperature
7 In an adiabatic expansion, the temperature of the gas
A. increases
B. becomes zero
C. decreases
D. decreases rapidly
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 Truth of kinetic energy is confirmed by:
A. Diffusion of gases
B. Brownian motion
C. Both A and B
D. None of these
10 Average KE of a gas molecule has:
A. Direct relation with absolute temperature and inverse relation with pressure
B. Direction relation with both absolute temperature and pressure
C. Inverse relation with both absolute temperature and pressure
D. None of these

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  • Bilal A Munir

    Bilal A Munir

    20 Jun 2018

    Nice

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