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

We can express the work in term of

Question # 2

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

Question # 3

The unit of thermodynamical scale is

Question # 4

The absolute temperature of the tripple point of water is

Question # 5

In thermodynamics, internal energy is the function of

Question # 6

A reversible cycle is the one in which

Question # 7

The value of E0in coulomb's law is:

Question # 8

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

Question # 9

Energy gas behaves like an ideal gast at

Question # 10

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

Question # 11

Generally a temperature scale is established by using certain physical properties of a material which varies

Question # 12

The temperature scale approved in SI units is:

Question # 13

When two objects are rubbed together, their internal energy

Question # 14

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

Question # 15

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 # 16

Generally a temperature scale is established by

Question # 17

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

Question # 18

First law of thermodynamic is special case of

Question # 19

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 # 20

Average KE of a gas molecule has:

Question # 21

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

Question # 22

The temperature of gas is produced by

Question # 23

The example of reversible process is

Question # 24

Pressure of a gas at constant volume is proportion to

Question # 25

On colliding in a closed container, the gas molecules

Question # 26

Which quantity is important in stating the entropy of the system

Question # 27

Rice takes longest to cook

Question # 28

Hotness and coldness of an object is represented in terms:

Question # 29

Triple point of water is

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 example of irreversible process is
A. slowly liquification
B. slowly evaporation
C. an explosion
D. all of them
2 The percentage of available heat energy converted into work by a diesel engine is roughly
A. 35 %`
B. 40 %
C. 35 - 40 %
D. 25 %
3 Gas constant per molecule is called:
A. Universal gas constant
B. Stefen's constant
C. Boltzmann constant
D. Gravitation constant
4 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
5 The ideal gas law is
A. P = nRT
B. V = nRT
C. PV =RT
D. PV =nRT
6 At constant temperature, if the density of the gas is increased, its pressure will:
A. One kg of a substance
B. Unit volume of a substance
C. One mole of a substance
D. None of these
7 According to the second law, which is must to produce work
A. a source contains a large amount of heat energy
B. two sources at the same temperature
C. two sources at the different temperatures
D. a source contains a small amount of energy
8 The volume of universal gas constant R is:
A. 8.314 J/K mole K
B. 8314 J/K mole K
C. 8.314 J/mole K
D. None of these
9 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
A. -20°C
B. 6.67°C
C. 5°C
D. 0°C
10 The coefficient of linear expansion of iron is 0.000011 per°K. An iron rod is 10 metre long at 27°C. The length of the rod will be decreased by 1.1 mm when the temperature of the rod changes to
A. 0°C
B. 10°C
C. 17°C
D. 20°C

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