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

A diatomic gas molecule has

Question # 2

We cannot utilize the heat contents of oceans and atmosphere because

Question # 3

The product of the pressure and volume of an ideal gas is

Question # 4

Which quantity is important in stating the entropy of the system

Question # 5

Which of the following is not an assumption of kinetic energy

Question # 6

The volume of given mass of a gas will be doubled at atmosphere pressure if the temperature of the gas is changed from 150°C to

Question # 7

Carnot heat engine only used

Question # 8

The unit of thermodynamical scale is

Question # 9

Absolute temperature can be calculated by

Question # 10

On the exaust stroke, the outlet values opens. The residual gases are expelled and piston moves

Question # 11

Efficiency of carnot engine is independent of the

Question # 12

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

Question # 13

Boyle's law is applicable in

Question # 14

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

Question # 15

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

Question # 16

Average KE of a gas molecule has:

Question # 17

Gas constant per molecule is called:

Question # 18

Which of the following is a state variable

Question # 19

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

Question # 20

When heat is removed from the system

Question # 21

In an adiabatic expansion, the temperature of the gas

Question # 22

One mole of any substance contain

Question # 23

Maximum density of H2O is at the temperature

Question # 24

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

Question # 25

The absolute temperature for an ideal gas is

Question # 26

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

Question # 27

In the theory of dimensional analysis, heat may be properly represented by:

Question # 28

The only significant motion possessed by the mono-atomic gas represented is:

Question # 29

A succession of events which bring the system back to its initial condition is called

Question # 30

The pressure exerted by the gas is

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 The pressure of gas everywhere inside the vessel will be the same provided the gas is of
A. Non-uniform density
B. uniform density
C. high density
D. low density
2 The bicycle pump provides a good example of
A. first law of thermodynamics
B. second law of thermodynamics
C. third law of thermodynamics
D. none of them
3 The pressure exerted by the gas is
A. directly proportional to the P.E
B. inversely proportional to the P.E
C. inversely proportional to the K.E
D. directly proportional to the K.E
4 A diatomic gas molecule has
A. translational energy
B. rotaional energy
C. vibrational energy
D. all of them
5 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
6 The kinetic energy of one molecule of a gas at normal temperature and pressure will be (k = 8.31 J/mole K) :
A. 1.7 x 103J
B. 10.2 x 103J
C. 3..4 x 103J
D. 6.8 x 103J
7 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
8 Rate of diffusion is
A. Faster in solids than in liquids and gases
B. Faster in liquids than in solids and gases
C. Equal to solids, liquids and gases
D. Faster in gases than in liquids and solids
9 The second law of thermodynamics is concerned with the circumstances in which
A. heat can be converted into work
B. direction of flow of heat
C. none of them
D. both of them
10 An irreversible heat flow from a hot to cold substances of a system, causes the disorder to
A. decrease
B. remains the same
C. increase
D. any one of them

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