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

Which of the following is not an assumption of kinetic energy

Question # 2

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

Question # 3

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

Question # 4

Rice takes longest to cook

Question # 5

In the formula P = N0KT, N0denotes:

Question # 6

The rate of change of momentum of a molecule is equal to:

Question # 7

At what temperature the adiabatic change is equivalent to the isothermal change?

Question # 8

The curve representing an adiabatic process is called

Question # 9

If water in a closed bottle is taken up to the moon and opened, the water gets

Question # 10

During the whole carnot cycle

Question # 11

Maximum density of H2O is at the temperature

Question # 12

The volume of a gas will be double of what it is at 0°C (pressure remaining constant) at

Question # 13

If N is the total number of molecules and V is the volume of the container, then the expression for the pressure of gas is

Question # 14

A gas is compressed adiabatically till its temperature is double. The ratio of its final volume to initial volume will be

Question # 15

If a molecule with momentum mv strikes a wall and rebound then the change in momentum will be:

Question # 16

The internal energy of an ideal gas system is generally the

Question # 17

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

Question # 18

A carnot cycle consists of

Question # 19

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

Question # 20

The heat required to raise the temperature of one mole of the substance through 1 K is called

Question # 21

The basis to define a temperature scale that is independent of material properties is provided by

Question # 22

In a heat engine, heat is supplied by the

Question # 23

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

Question # 24

Gas constant per molecule is called:

Question # 25

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

Question # 26

The volume of universal gas constant R is:

Question # 27

A diatomic gas molecule has

Question # 28

Melting point of ice

Question # 29

The temperature scale approved in SI units is:

Question # 30

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

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 The motion of molecules in gases is:
A. Orderly
B. Random
C. Circular
D. All of these
2 At the constant temperature, if the value of a given mass of a gas is double, then the density of gas becomes:
A. Double
B. Remains constant
C. Half
D. None of these
3 The Boltzman constant has the value
A. 1.38 x 10-23JK-1
B. 1.28 x 10-23JK-1
C. 1.38 x 10-26JK-1
D. 1.28 x 10-26JK-1
4 Which of the following is not an example of adiabatic process
A. the rapid escape of air from a burst type
B. the rapid expansion and compression of air through which a sound wave is passing
C. cloud formation in the atmosphere
D. none of them
5 Heat travels through vacuum by
A. Conduction
B. Convection
C. Radiation
D. Both A and B
6 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
7 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
8 The internal energy of a system does not depend upon the
A. initial state of the system
B. final state of the system
C. path
D. none of them
9 First law of thermodynamics is consequence of conservation of
A. Work
B. Energy
C. Heat
D. All of these
10 A reversible cycle is the one in which
A. some of the changes are reversible
B. all of the changes are reversible
C. all of the changes are irreversible
D. none of them

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