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 bicycle pump provides a good example of

Question # 2

A reversible cycle is the one in which

Question # 3

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

Question # 4

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

Question # 5

Real gases strictly obey gas law at:

Question # 6

Average KE of a gas molecule has:

Question # 7

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

Question # 8

Generally a temperature scale is established by

Question # 9

The absolute temperature of the tripple point of water is

Question # 10

When heat is removed from the system

Question # 11

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

Question # 12

The volume of universal gas constant R is:

Question # 13

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

Question # 14

One mole of any substance contain

Question # 15

First law of thermodynamic is special case of

Question # 16

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

Question # 17

At absolute temperature, the kinetic energy of the molecules

Question # 18

If a process cannot be retraced in the backward direction by reversing the controlling factors, it is

Question # 19

The curve representing an adiabatic process is called

Question # 20

On the power stroke, a spark fires the mixtures causing a rapid increase in pressure and temperature and the burning mixture expands

Question # 21

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

Question # 22

Adiabatic change occurs when the gas

Question # 23

If an amount of heat enters the system it could

Question # 24

Which of the following is not an example of adiabatic process

Question # 25

We cannot utilize the heat contents of oceans and atmosphere because

Question # 26

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

Question # 27

The motion of molecules in gases is:

Question # 28

In thermodynamics, internal energy is the function of

Question # 29

Good absorbers of heat are

Question # 30

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

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 The curve representing an adiabatic process is called
A. isotherm
B. adiabat
C. adiable
D. none of them
2 Good absorbers of heat are
A. Poor emitters
B. Non emitters
C. Good emitters
D. Highly polarized
3 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
4 A gas is compressed adiabatically till its temperature is double. The ratio of its final volume to initial volume will be
A. 1/2
B. More than 1/2
C. Less than 1/2
D. Between 1 and 2
5 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
6 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
7 The efficiency of diesel engine is
A. 25%
B. 25 - 30%
C. 35%
D. 35 - 40%
8 The disorder in the system increases due to the
A. removal of heat
B. addition of heat
C. removal or addition of heat
D. none of them
9 Boyle's law is applicable in
A. Isochoric process
B. Isothermal process
C. Isobaric process
D. Isotonic process
10 The absolute temperature of the tripple point of water is
A. 100°C
B. 4°C
C. 373 K
D. 273.16 K

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