ECAT Pre Computer Science Chapter 11 MCQ Test With Answer

MCQ's Test For ECAT Physics Chapter 11 Heat & Thermodynamics

Try The MCQ's Test For ECAT Physics Chapter 11 Heat & Thermodynamics

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ECAT Physics Chapter 11 Heat & Thermodynamics

00:00
Question # 1

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

Question # 2

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

Question # 3

Pressure exerted by a gas is

Question # 4

Brownian motion increases due to

Question # 5

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

Question # 6

The disorder in the system increases due to the

Question # 7

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

Question # 8

In the reverse process, the working substance passes through the same stages as in the direct process and

Question # 9

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 # 10

The absolute temperature of the tripple point of water is

Question # 11

In the formula P = N0KT, N0denotes:

Question # 12

Generally a temperature scale is established by using certain physical properties of a material which varies

Question # 13

Energy gas behaves like an ideal gast at

Question # 14

The volume of given mass of a gas will be doubled at atmosphere pressure if the temperature of the gas is changed from 150°C to

Question # 15

The concept of entropy was introduced into the study of thermodynamics in

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 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
2 The example of irreversible process is
A. slowly liquification
B. slowly evaporation
C. an explosion
D. all of them
3 The temperature scale approved in SI units is:
A. Celsius scale
B. Kelvin scale
C. Fehrenheit scale
D. None of these
4 Specific heat at constant pressure is greater than the specific heat at constant volume because
A. Heat is used up to increase temperature at constant pressure
B. Heat is used by gas for expansions purposes at constant pressure
C. Heat is use dup to increase internal energy
D. The above statement is invalid
5 Rate of diffusion is
A. Faster in solids than in liquids and gases
B. Faster in liquids than in solids and gases
C. Equal to solids, liquids and gases
D. Faster in gases than in liquids and solids
6 First law of thermodynamic is special case of
A. Law of conservation of energy
B. Charle's law
C. Law of conservation of mass
D. Boyle's law
7 The efficiency of petrol engine is usually not more than 25% to 30% because of
A. friction
B. heat losses
C. both of them
D. none of them
8 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
9 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
10 The efficiency of diesel engine is
A. 25%
B. 25 - 30%
C. 35%
D. 35 - 40%

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  • Arsal

    Arsal

    31 Jan 2018

    Entry test is a good thing

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