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

The process which is carried out at constant temperature is known as

Question # 2

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

Question # 3

Maximum density of H2O is at the temperature

Question # 4

Heat travels through vacuum by

Question # 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

Question # 6

The earliest heat engine was

Question # 7

Efficiency of carnot engine is independent of the

Question # 8

The internal energy of a system does not depend upon the

Question # 9

On the compression stroke of the petrol engine, the inlet value is closed and the mixture is compressed

Question # 10

Gas constant per molecule is called:

Question # 11

During the whole carnot cycle

Question # 12

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

Question # 13

Hotness and coldness of an object is represented in terms:

Question # 14

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 # 15

Sadi carnot described an ideal heat engine in

Question # 16

Truth of kinetic energy is confirmed by:

Question # 17

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

Question # 18

In an ideal gas, the molecules have:

Question # 19

The absolute temperature of the tripple point of water is

Question # 20

Specific heat at constant pressure is greater than the specific heat at constant volume because

Question # 21

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

Question # 22

An irreversible heat flow from a hot to cold substances of a system, causes the disorder to

Question # 23

When heat is removed from the system

Question # 24

The curve representing an isothermal process is called

Question # 25

The pressure of gas everywhere inside the vessel will be the same provided the gas is of

Question # 26

The example of reversible process is

Question # 27

In the reverse process, the working substance passes through the same stages as in the direct process and

Question # 28

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

Question # 29

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

Question # 30

Tick the correct pair when M denotes the molecular mass and other symbols carry usual meanings:

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1
During the whole carnot cycle
A. Thermal equilibrium is maintained
B. mechanical equilibrium is maintained
C. both the thermal and mechanical equilibriumis maintained
D. both the thermal and mechanical equilibrium is not maintained
2 Gas constant per molecule is called:
A. Universal gas constant
B. Stefen's constant
C. Boltzmann constant
D. Gravitation constant
3 According to kinetic theory of gases, molecules of a gas behave like
A. Inelastic spheres
B. Perfectly elastic rigid sphere
C. Perfectly elastic non-rigid spheres
D. Inelastic non-rigid spheres
4 Boyle's law is applicable in
A. Isochoric process
B. Isothermal process
C. Isobaric process
D. Isotonic process
5 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
6 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
7 Good absorbers of heat are
A. Poor emitters
B. Non emitters
C. Good emitters
D. Highly polarized
8 Two samples A and B of a gas initially of the same temperature and pressure are compressed from a volume V to a volume V/2 such that A is compressed isothermally and B adiabatically. The final pressure
A. A greater than than of B
B. A is equal to that of B
C. A is less than that of B
D. A is twice the pressure of B
9 The internal energy of an ideal gas system is generally the
A. translational K.E of molecules
B. vibrational K.E of molecules
C. rotational K.E of molecules
D. all of them
10 The temperature of gas is produced by
A. At potential energy of its molecules
B. The kinetic energy of its molecules
C. The attractive force between its molecules
D. The repulsive force between its molecules

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