ECAT Pre General Science Physics Chapter 11 MCQ Test With Answer

MCQ's Test For ECAT Pre General Science Physics Chapter 11 Heat & Thermodynamics

Try The MCQ's Test For ECAT Pre General Science Physics Chapter 11 Heat & Thermodynamics

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ECAT Pre General Science Physics Chapter 11 Heat & Thermodynamics

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Question # 1

In an adiabatic process the work is done at the expense of the

Question # 2

When two objects are rubbed together, their internal energy

Question # 3

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

Question # 4

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

Question # 5

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

Question # 6

The internal energy of an ideal gas system is generally the

Question # 7

The absolute temperature for an ideal gas is

Question # 8

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

Question # 9

Pressure applied at any point of gas at rest is transmitted equally to all parts of the gas. This is the statement of:

Question # 10

A process which can be retraced in exactly reverse order, without producing any change in the surroundings is called

Question # 11

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

Question # 12

The Boltzman constant has the value

Question # 13

Which of the following is not an assumption of kinetic energy

Question # 14

Absolute temperature can be calculated by

Question # 15

The disorder in the system increases due to the

Question # 16

Since the absolute scale is independent of the property of the working substance, hence, can be applied at

Question # 17

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

Question # 18

At absolute temperature, the kinetic energy of the molecules

Question # 19

The ideal gas law is

Question # 20

Hotness and coldness of an object is represented in terms:

Question # 21

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 # 22

Which of the following does not have the same units:

Question # 23

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

Question # 24

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

Question # 25

The curve representing an adiabatic process is called

Question # 26

The pressure exerted by the gas is

Question # 27

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

Question # 28

Which of the following is a state variable

Question # 29

Amount of heat required to raise the temperature of a body through 1 K is called its

Question # 30

On the power stroke, a spark fires the mixtures causing a rapid increase in pressure and temperature and the burning mixture expands

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 Gas constant per molecule is called:
A. Universal gas constant
B. Stefen's constant
C. Boltzmann constant
D. Gravitation constant
2 First law of thermodynamics is consequence of conservation of
A. Work
B. Energy
C. Heat
D. All of these
3 The concept of entropy was introduced into the study of thermodynamics in
A. 1856
B. 1865
C. 1656
D. 1685
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 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
6 If an amount of heat enters the system it could
A. decrease the internal energy
B. not change the internal energy
C. increase the internal energy
D. none of them
7 Efficiency of carnot engine is independent of the
A. temperature of sink
B. temperature of source
C. nature of the working substances
D. none of them
8 The curve representing an isothermal process is called
A. adiabat
B. isotherm
C. fixed temperature
D. none of them
9 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
A. Clausius statement of second law
B. Kelvin'sstatement of second law
C. Clausius statement of first law
D. Kelvin's statement of first law
10 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

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