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

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Question # 1

Boyle's law is applicable in

Question # 2

Which of the following is not an assumption of kinetic energy

Question # 3

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

Question # 4

At constant temperature, if the density of the gas is increased, its pressure will:

Question # 5

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

Question # 6

An isochoric process is one which take place at

Question # 7

A real gas can be approximated to an ideal gas at

Question # 8

First law of thermodynamic is special case of

Question # 9

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

Question # 10

The Boltzman constant has the value

Question # 11

The state in which ice, water and vapour coexists in equilibrium is called

Question # 12

A typical four stroke petrol engine undergoes how many successive processes in each cycle

Question # 13

The value of E0in coulomb's law is:

Question # 14

The temperature scale approved in SI units is:

Question # 15

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

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 If the ratio of densities of two gases is 1:4, then the ratio of their rates of diffusion into one another is
A. 2 : 1
B. 4 : 1
C. 1 : 4
D. 3 : 4
2 Truth of kinetic energy is confirmed by:
A. Diffusion of gases
B. Brownian motion
C. Both A and B
D. None of these
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 In an ideal gas, the molecules have:
A. Kinetic energy only
B. Potential energy only
C. Both KE and PE
D. None of these
5 Which of the following is not an assumption of kinetic energy
A. a finite volume of gas consists of very large number of molecules
B. the gas molecules are in random motion
C. collision between the gas molecules are inelastic
D. the size of the gas molecules is much smaller than the separation between molecules
6 The earliest heat engine was
A. petrol engine
B. diesel engine
C. electric engine
D. steam engine
7 An isochoric process is one which take place at
A. Constant internal energy
B. Constant entropy
C. Constant volume
D. Constant pressure
8 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
9 When two objects are rubbed together, their internal energy
A. remains same
B. decreases
C. remains the same then decreases
D. increases
10 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

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  • Arsal

    Arsal

    31 Jan 2018

    Entry test is a good thing

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