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 thermodynamics, internal energy is the function of

Question # 2

Which of the following is not an example of adiabatic process

Question # 3

If a liquid is heated in weightlessness, the heat is transmitted through

Question # 4

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

Question # 5

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

Question # 6

A typical four stroke petrol engine undergoes how many successive processes in each cycle

Question # 7

The bicycle pump provides a good example of

Question # 8

Rate of diffusion is

Question # 9

The percentage of available heat energy converted into work by a petrol engine is roughly

Question # 10

The absolute temperature of the tripple point of water is

Question # 11

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

Question # 12

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

Question # 13

Internal energy is the sum of all the forms of

Question # 14

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

Question # 15

Melting point of ice

Question # 16

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

Question # 17

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

Question # 18

While deriving the equation for pressure of a gas we consider the

Question # 19

Hotness and coldness of an object is represented in terms:

Question # 20

A carnot cycle consists of

Question # 21

An isochoric process is one which take place at

Question # 22

The value of E0in coulomb's law is:

Question # 23

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

Question # 24

Boyle's law is applicable in

Question # 25

A diatomic gas molecule has

Question # 26

Which of the following is a state variable

Question # 27

First law of thermodynamics tells us that heat energy can be converted into equivalent amount of work, but it is silent about

Question # 28

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

Question # 29

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

Question # 30

For the working of a heat engine, there must be

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 Triple point of water is
A. 273.16°F
B. 372.16K
C. 273.16°F
D. 273.16
2 Average KE of a gas molecule has:
A. Direct relation with absolute temperature and inverse relation with pressure
B. Direction relation with both absolute temperature and pressure
C. Inverse relation with both absolute temperature and pressure
D. None of these
3 In an adiabatic process the work is done at the expense of the
A. energy supplied to the system
B. energy gained from the surroundings
C. internal energy
D. none of them
4 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
5 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
6 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
A. 0 J
B. 2 J
C. 5 J
D. 10 J
7 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
8 The percentage of available heat energy converted into work by a diesel engine is roughly
A. 35 %`
B. 40 %
C. 35 - 40 %
D. 25 %
9 The state in which ice, water and vapour coexists in equilibrium is called
A. zero degree celsius
B. zero degree fahrenheit
C. absolute zero
D. 373 K
10 The heat required to raise the temperature of one mole of the substance through 1 K is called
A. heat capacity
B. specific heat capacity
C. molar specific heat
D. all of them

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