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 work done on the system by the environment is considered as

Question # 2

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

Question # 3

Brownian motion increases due to

Question # 4

Pressure of a gas at constant volume is proportion to

Question # 5

In all natural processes where heat flows from one system to another, there is always a net

Question # 6

One mole of any substance contain

Question # 7

Boyle's law is applicable in

Question # 8

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

Question # 9

The length of a metallic rod is 5 meter at 100°C. The coefficient of cubical expansion of the metal will be

Question # 10

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

Question # 11

Adiabatic change occurs when the gas

Question # 12

The second law of thermodynamics is concerned with the circumstances in which

Question # 13

Triple point of water is

Question # 14

When heat is removed from the system

Question # 15

A reversible cycle is the one in which

Question # 16

Rice takes longest to cook

Question # 17

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

Question # 18

The Boltzman constant has the value

Question # 19

Hydrogen and helium of same volume V at same temperature T and same pressure P are mixed to have same volume V. The resulting pressure of the mixtures will be

Question # 20

According to the second law, which is must to produce work

Question # 21

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

Question # 22

Which of the following is not an example of adiabatic process

Question # 23

The heat required to raise the temperature of one mole of the gas through 1 K at constant volume is called

Question # 24

Generally a temperature scale is established by

Question # 25

At absolute temperature, the kinetic energy of the molecules

Question # 26

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

Question # 27

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

Question # 28

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

Question # 29

The concept of entropy was introduced into the study of thermodynamics in

Question # 30

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

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 The curve representing an isothermal process is called
A. adiabat
B. isotherm
C. fixed temperature
D. none of them
2 A process is a reversible process, if the entropy of the system
A. increases
B. decreases
C. remains constant
D. none of them
3 Amount of heat required to raise the temperature of a body through 1 K is called its
A. Specific heat
B. Water equivalent
C. Thermal capacity
D. Entropy
4 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
5 The concept of entropy was introduced into the study of thermodynamics in
A. 1856
B. 1865
C. 1656
D. 1685
6 The volume of a gas will be double of what it is at 0°C (pressure remaining constant) at
A. 546 K
B. 273 K
C. 546°C
D. 273°C
7 The unit of thermodynamical scale is
A. centigrade
B. fahrenheit
C. kelvin
D. none of them
8 If denotes the total number of molecules in cubic vessel such that m is mass of each milecule and I is length of each side of vessel, then mN/I3gives the:
A. Force
B. Density
C. Work done
D. Pressure
9 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
10 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

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