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 work done by the system on its environment is considered as

Question # 2

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

Question # 3

Truth of kinetic energy is confirmed by:

Question # 4

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

Question # 5

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

Question # 6

Efficiency of carnot engine is independent of the

Question # 7

The nature of thermal radiation is similar to:

Question # 8

Heat travels through vacuum by

Question # 9

The efficiency of diesel engine is

Question # 10

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

Question # 11

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

Question # 12

We cannot utilize the heat contents of oceans and atmosphere because

Question # 13

Two metal rods A and B have their initial lengths in the ratio 2 : 3 and coefficients of linear expansion in the ratio 4 : 3. When they are heated through same temperature difference the ratio of their linear expansion is

Question # 14

Melting point of ice

Question # 15

The only significant motion possessed by the mono-atomic gas represented is:

Question # 16

During the whole carnot cycle

Question # 17

Which quantity is important in stating the entropy of the system

Question # 18

Hydrogen and helium of same volume V at same temperature T and same pressure P are mixed to have same volume V. The resulting pressure of the mixtures will be

Question # 19

Heat required to raise the temperature of one mole of a gas through 1 K at constant pressure is called

Question # 20

The value of E0in coulomb's law is:

Question # 21

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

Question # 22

A process which can be retraced in exactly reverse order, without producing any change in the surroundings is called

Question # 23

The rate of change of momentum of a molecule is equal to:

Question # 24

The behaviour of gases is well accounted by the kinetic theory based on

Question # 25

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

Question # 26

Which of the following is not thermo dynamical function?

Question # 27

Real gases strictly obey gas law at:

Question # 28

Brownian motion increases due to

Question # 29

One kilogram of different substances contain

Question # 30

When heat is removed from the system

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 The volume of a gas will be double of what it is at 0°C (pressure remaining constant) at
A. 546 K
B. 273 K
C. 546°C
D. 273°C
2 Triple point of water is
A. 273.16°F
B. 372.16K
C. 273.16°F
D. 273.16
3 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
4 Which of the following is not thermo dynamical function?
A. Enthalpy
B. Work done
C. Gibb's energy
D. Internal energy
5 What temperature is the same on Celsius scale as well as on Fahrenheit scale?
A. 32°C
B. -32°C
C. -40°C
D. -212°C
6 Carnot heat engine only used
A. isothermal processes
B. adiabatic processes
C. both of them
D. none of them
7 In an ideal gas, the molecules have:
A. Kinetic energy only
B. Potential energy only
C. Both KE and PE
D. None of these
8 An isochoric process is one which take place at
A. Constant internal energy
B. Constant entropy
C. Constant volume
D. Constant pressure
9 Heat travels through vacuum by
A. Conduction
B. Convection
C. Radiation
D. Both A and B
10 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

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