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

Absolute temperature can be calculated by

Question # 2

In a heat engine, heat is supplied by the

Question # 3

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

Question # 4

The bicycle pump provides a good example of

Question # 5

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

Question # 6

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

Question # 7

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

Question # 8

First law of thermodynamics is consequence of conservation of

Question # 9

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

Question # 10

Truth of kinetic energy is confirmed by:

Question # 11

First law of thermodynamic is special case of

Question # 12

One mole of any substance contain

Question # 13

The temperature of gas is produced by

Question # 14

Hotness and coldness of an object is represented in terms:

Question # 15

Pressure exerted by a gas is

Question # 16

Generally a temperature scale is established by

Question # 17

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

Question # 18

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

Question # 19

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

Question # 20

For the working of a heat engine, there must be

Question # 21

Adiabatic change occurs when the gas

Question # 22

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

Question # 23

If the volume of the gas is to be increased by 4 times, then

Question # 24

Rate of diffusion is

Question # 25

If the formula PV = nRT, n denotes:

Question # 26

The value of E0in coulomb's law is:

Question # 27

If the distance between two charges is doubled, the force between them will become:

Question # 28

The motion of molecules in gases is:

Question # 29

Triple point of water is

Question # 30

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

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 When two objects come to common temperature, the body is said to be in:
A. Static equilibrium
B. Dynamic equilibrium
C. Thermal equilibrium
D. None of these
2 R.M.S velocity of a particle is V at pressure P. If pressure increases by two times, then R.M.S velocity becomes
A. 2V
B. 3V
C. 0.5V
D. V
3 If water in a closed bottle is taken up to the moon and opened, the water gets
A. Freeze
B. Boiled
C. Dissociated into O2and H2
D. Evaporated
4 Gas constant per molecule is called:
A. Universal gas constant
B. Stefen's constant
C. Boltzmann constant
D. Gravitation constant
5 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
A. P=P/V<1/2mv2>
B. P=2N/V<1/2mv2>
C. P=2/3N/V<1/2mv2>
D. P=2/3N/V<mv2>
6 At absolute temperature, the kinetic energy of the molecules
A. Becomes zero
B. Becomes maximum
C. Becomes minimum
D. Remain constant
7 Rice takes longest to cook
A. In a submarine 100 m below the surface of the sea
B. At sea level
C. At Murree
D. At Mount Everest
8 Internal energy is the sum of all the forms of
A. K.E
B. P.E
C. both of them
D. none of them
9 Tick the correct pair when M denotes the molecular mass and other symbols carry usual meanings:
A. N = nNAm = MNA
B. n = N NA, M = mNA
C. M = NA/N , NA= m/n
D. N = nNA, M = mNA
10 First law of thermodynamic is special case of
A. Law of conservation of energy
B. Charle's law
C. Law of conservation of mass
D. Boyle's law

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  • Bilal A Munir

    Bilal A Munir

    20 Jun 2018

    Nice

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