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

If the formula PV = nRT, n denotes:

Question # 2

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

Question # 3

A carnot cycle consists of

Question # 4

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

Question # 5

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

Question # 6

The product of the pressure and volume of an ideal gas is

Question # 7

If the distance between two charges is doubled, the force between them will become:

Question # 8

The nature of thermal radiation is similar to:

Question # 9

Gas constant per molecule is called:

Question # 10

The internal energy of a system does not depend upon the

Question # 11

We cannot utilize the heat contents of oceans and atmosphere because

Question # 12

Efficiency of carnot engine is independent of the

Question # 13

The example of irreversible process is

Question # 14

For the working of a heat engine, there must be

Question # 15

The curve representing an isothermal process is called

Question # 16

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

Question # 17

Pressure may be define as _______ per second per unit area:

Question # 18

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

Question # 19

One kilogram of different substances contain

Question # 20

A process in which no heat enters or leaves the system is called

Question # 21

Absolute temperature can be calculated by

Question # 22

When heat is removed from the system

Question # 23

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

Question # 24

Sadi carnot described an ideal heat engine in

Question # 25

During the whole carnot cycle

Question # 26

The example of reversible process is

Question # 27

A reversible cycle is the one in which

Question # 28

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

Question # 29

In thermodynamics, internal energy is the function of

Question # 30

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

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ECAT Class Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 Which of the following is not thermo dynamical function?
A. Enthalpy
B. Work done
C. Gibb's energy
D. Internal energy
2 At what temperature the adiabatic change is equivalent to the isothermal change?
A. Zero degree Celsius
B. Zero Kelvin
C. Critical temperature
D. Above critical temperature
3 A gas which strictly obeys the gas laws under all conditions of temperature and pressure is called:
A. Ideal gas
B. Inert gas
C. Real gas
D. None of these
4 In the theory of dimensional analysis, heat may be properly represented by:
A. ML2T-2
B. MT-2
C. ML-1T-1
D. None of these
5 A heat engine is that which converts
A. mechanical energy into thermal energy
B. thermal energy into mechanical energy
C. K.E into potential energy
D. heat energy into light energy
6 Generally a temperature scale is established by
A. one fixed point
B. two fixed point
C. three fixed point
D. four fixed point
7 The absolute temperature for an ideal gas is
A. directly proportional to the rotational K.E of gas molecules
B. directly proportional to the vibrational K.E of gas molecules
C. directly proportional to the average translational K.E.of gas molecules
D. directly proportional to the P.E. of gas molecules
8 Sadi carnot described an ideal heat engine in
A. 1820
B. 1840
C. 1860
D. 1880
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 When heat is removed from the system
A. negative
B. positive
C. zero
D. any one of them

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