ECAT Pre Computer Science Chapter 11 MCQ Test With Answer

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

No spark plug is needed in

Question # 2

In a heat engine, heat is supplied by the

Question # 3

When heat is removed from the system

Question # 4

A reversible cycle is the one in which

Question # 5

In the formula P = N0KT, N0denotes:

Question # 6

The internal energy of an ideal gas system is generally the

Question # 7

The example of irreversible process is

Question # 8

Sadi carnot described an ideal heat engine in

Question # 9

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

Question # 10

Specific heat at constant pressure is greater than the specific heat at constant volume because

Question # 11

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

Question # 12

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

Question # 13

A carnot cycle consists of

Question # 14

When two objects are rubbed together, their internal energy

Question # 15

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

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 If 42 J heat is transferred to the system and the work done by the system is 32 J then what will be the change in internal energy
A. 0 J
B. 2 J
C. 5 J
D. 10 J
2 Melting point of ice
A. Increases with increasing pressure
B. Decreases with increasing pressure
C. Is independent of pressure
D. Is proportional to pressure
3 Rice takes longest to cook
A. In a submarine 100 m below the surface of the sea
B. At sea level
C. At Murree
D. At Mount Everest
4 10 c.c. each of oxygen and hydrogen are kept in separate flasks. Then which of the following relations is correct?
A. Each have same number of molecules
B. Don't have same number of molecules
C. Can't be predicted
D. None
5 The number of translation degress of freedom for a diatomic gas is
A. 2
B. 3
C. 5
D. 6
6 At the constant temperature, if the value of a given mass of a gas is double, then the density of gas becomes:
A. Double
B. Remains constant
C. Half
D. None of these
7 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
8 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
9 If a process cannot be retraced in the backward direction by reversing the controlling factors, it is
A. a reversible process
B. an irreversible process
C. any one of them
D. both of them
10 The work done by the system on its environment is considered as
A. positive
B. negative
C. zero
D. any one of them

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