ECAT Pre Engineering Physics Chapter 11 MCQ Test With Answer

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

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

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Physics ECAT Pre Engineering Chapter 11 Heat & Thermodynamics

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Question # 1

On the exaust stroke, the outlet values opens. The residual gases are expelled and piston moves

Question # 2

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

Question # 3

Absolute temperature can be calculated by

Question # 4

During the whole carnot cycle

Question # 5

At the constant temperature, if the value of a given mass of a gas is double, then the density of gas becomes:

Question # 6

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

Question # 7

Average KE of a gas molecule has:

Question # 8

A heat engine is that which converts

Question # 9

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

Question # 10

The second law of thermodynamics is concerned with the circumstances in which

Question # 11

The internal energy of an ideal gas system is generally the

Question # 12

In the theory of dimensional analysis, heat may be properly represented by:

Question # 13

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

Question # 14

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

Question # 15

Generally a temperature scale is established by

Question # 16

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

Question # 17

When two objects are rubbed together, their internal energy

Question # 18

First law of thermodynamics is consequence of conservation of

Question # 19

A diatomic gas molecule has

Question # 20

The volume of universal gas constant R is:

Question # 21

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

Question # 22

An irreversible heat flow from a hot to cold substances of a system, causes the disorder to

Question # 23

10 c.c. each of oxygen and hydrogen are kept in separate flasks. Then which of the following relations is correct?

Question # 24

Rice takes longest to cook

Question # 25

If an amount of heat enters the system it could

Question # 26

The value of E0in coulomb's law is:

Question # 27

First law of thermodynamic is special case of

Question # 28

If the formula PV = nRT, n denotes:

Question # 29

In an adiabatic process the work is done at the expense of the

Question # 30

The pressure exerted by the gas is

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 For making cooking utensils, which of the following pairs of properties is most suited?
A. Low specific heat and high conductivity
B. Low specific heat and low conductivity
C. High specific heat and high conductivity
D. High specific heat and low conductivity
2 The concept of entropy was introduced into the study of thermodynamics in
A. 1856
B. 1865
C. 1656
D. 1685
3 R.M.S velocity of a particle is V at pressure P. If pressure increases by two times, then R.M.S velocity becomes
A. 2V
B. 3V
C. 0.5V
D. V
4 The heat required to raise the temperature of one mole of the gas through 1 K at constant volume is called
A. heat capacity
B. specific heat capacity
C. molar specific heat
D. molar specific heat at constant volume
5 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
6 If a liquid is heated in weightlessness, the heat is transmitted through
A. Conduction
B. Convection
C. Radiation
D. Neither, because the liquid cannot be heated in weightlessness
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 The percentage of available heat energy converted into work by a diesel engine is roughly
A. 35 %`
B. 40 %
C. 35 - 40 %
D. 25 %
9 Which quantity is important in stating the entropy of the system
A. initial entropy
B. final entropy
C. change in entropy
D. none of them
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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  • Bilal A Munir

    Bilal A Munir

    20 Jun 2018

    Nice

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