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

When heat is removed from the system

Question # 2

Efficiency of carnot engine is independent of the

Question # 3

If a system undergoes a natural process it will go in the direction that causes the entropy of the system plus the environment to increase, this is another statement of

Question # 4

The absolute temperature of the tripple point of water is

Question # 5

Melting point of ice

Question # 6

Boyle's law is applicable in

Question # 7

In an ideal gas, the molecules have:

Question # 8

Hotness and coldness of an object is represented in terms:

Question # 9

We can express the work in term of

Question # 10

Since the absolute scale is independent of the property of the working substance, hence, can be applied at

Question # 11

The relationship between Boltzmann constant k with R and NAis given as:

Question # 12

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

Question # 13

On a cold morning a metal surface will fell colder to touch than a wooden surface, because

Question # 14

The nature of thermal radiation is similar to:

Question # 15

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

Question # 16

One kilogram of different substances contain

Question # 17

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

Question # 18

In a heat engine, heat is supplied by the

Question # 19

At constant temperature, if the density of the gas is increased, its pressure will:

Question # 20

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

Question # 21

The internal energy of an ideal gas system is generally the

Question # 22

Two samples A and B of a gas initially of the same temperature and pressure are compressed from a volume V to a volume V/2 such that A is compressed isothermally and B adiabatically. The final pressure

Question # 23

The curve representing an adiabatic process is called

Question # 24

At absolute temperature, the kinetic energy of the molecules

Question # 25

Adiabatic change occurs when the gas

Question # 26

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

Question # 27

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

Question # 28

The temperature of gas is produced by

Question # 29

For making cooking utensils, which of the following pairs of properties is most suited?

Question # 30

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

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 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
2 Pressure applied at any point of gas at rest is transmitted equally to all parts of the gas. This is the statement of:
A. Newton's second law
B. Pascal's law
C. Carnot theorem
D. Second law of thermodynamics
3 Brownian motion increases due to
A. Increase in size of Brownian particle
B. Increase in temperature of medium
C. Increase in density of medium
D. Increase in viscosity of medium
4 Pressure of a gas at constant volume is proportion to
A. Total energy of gas
B. Average P.E to molecules
C. Average K.E of molecules
D. Total internal energy of gas
5 At absolute temperature, the kinetic energy of the molecules
A. Becomes zero
B. Becomes maximum
C. Becomes minimum
D. Remain constant
6 10 c.c. each of oxygen and hydrogen are kept in separate flasks. Then which of the following relations is correct?
A. Each have same number of molecules
B. Don't have same number of molecules
C. Can't be predicted
D. None
7 A process is a reversible process, if the entropy of the system
A. increases
B. decreases
C. remains constant
D. none of them
8 It is impossible to devise a processes which may convert heat, extracted from a single reservoir, entirely into work without leaving any change in the working system. This is the statement of
A. Clausius statement of second law
B. Kelvin'sstatement of second law
C. Clausius statement of first law
D. Kelvin's statement of first law
9 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
10 A process which can be retraced in exactly reverse order, without producing any change in the surroundings is called
A. reversible process
B. irreversible process
C. any one of them
D. none of them

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