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

The temperature of gas is produced by

Question # 2

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

Question # 3

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

Question # 4

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

Question # 5

The nature of thermal radiation is similar to:

Question # 6

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

Question # 7

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

Question # 8

R.M.S velocity of a particle is V at pressure P. If pressure increases by two times, then R.M.S velocity becomes

Question # 9

Average KE of a gas molecule has:

Question # 10

If R is gas constant for 1 gram mole, Cpand Cvare specific heat for a solid then

Question # 11

The ideal gas law is

Question # 12

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

Question # 13

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

Question # 14

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

Question # 15

In an ideal gas, the molecules have:

Question # 16

The efficiency of petrol engine is usually not more than 25% to 30% because of

Question # 17

Heat required to raise the temperature of one mole of a gas through 1 K at constant pressure is called

Question # 18

The state in which ice, water and vapour coexists in equilibrium is called

Question # 19

The motion of molecules in gases is:

Question # 20

The curve representing an adiabatic process is called

Question # 21

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 # 22

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

Question # 23

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

Question # 24

Which quantity is important in stating the entropy of the system

Question # 25

At O° K which of the following properties of a gas will be zero?

Question # 26

The curve representing an isothermal process is called

Question # 27

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

Question # 28

Rice takes longest to cook

Question # 29

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

Question # 30

A process in which no heat enters or leaves the system is called

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 Pressure may be define as _______ per second per unit area:
A. Change in force
B. Change in momentum
C. Change in energy
D. Work done
2 The disorder in the system increases due to the
A. removal of heat
B. addition of heat
C. removal or addition of heat
D. none of them
3 The unit of thermodynamical scale is
A. centigrade
B. fahrenheit
C. kelvin
D. none of them
4 Which of the following is not an example of adiabatic process
A. the rapid escape of air from a burst type
B. the rapid expansion and compression of air through which a sound wave is passing
C. cloud formation in the atmosphere
D. none of them
5 The length of a metallic rod is 5 meter at 100°C. The coefficient of cubical expansion of the metal will be
A. 2.0 x 10-5/°C
B. 4.0x10-5/°C
C. 6.0x10-5/°C
D. 2.33x10-5/°C
6 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
7 In thermodynamics, internal energy is the function of
A. temperature
B. pressure
C. state
D. none of them
8 A gas which strictly obeys the gas laws under all conditions of temperature and pressure is called:
A. Ideal gas
B. Inert gas
C. Real gas
D. None of these
9 If the formula PV = nRT, n denotes:
A. Number of molecules per unit volume
B. Number of moles
C. Number of molecules
D. None of these
10 At constant temperature, on increasing the pressure of a gas by 5%, its volume. The final temperature of the gas will be
A. 81 K
B. 355 K
C. 627 K
D. 627°C

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  • Bilal A Munir

    Bilal A Munir

    20 Jun 2018

    Nice

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