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

When two objects are rubbed together, their internal energy

Question # 2

If the volume of the gas is to be increased by 4 times, then

Question # 3

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

Question # 4

Electromagnetic waves emitted by hot bodies are called:

Question # 5

If an amount of heat enters the system it could

Question # 6

If the ratio of densities of two gases is 1:4, then the ratio of their rates of diffusion into one another is

Question # 7

Hotness and coldness of an object is represented in terms:

Question # 8

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

Question # 9

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

Question # 10

The efficiency of diesel engine is

Question # 11

Which of the following is a state variable

Question # 12

In the study of thermodynamics, which gas is considered as the working substance

Question # 13

If a molecule with momentum mv strikes a wall and rebound then the change in momentum will be:

Question # 14

In a heat engine, heat is supplied by the

Question # 15

Rate of diffusion is

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ECAT Physics Chapter 11 Important MCQ's

Sr.# Question Answer
1 Generally a temperature scale is established by
A. one fixed point
B. two fixed point
C. three fixed point
D. four fixed point
2 The value of E0in coulomb's law is:
A. 9 x 109Nm2C-2
B. 8.85 x 10-12C2N-1m-2
C. 8.85 x 10-12Nm2C-2
D. 9 x 109C2N-1m-2
3 Pressure may be define as _______ per second per unit area:
A. Change in force
B. Change in momentum
C. Change in energy
D. Work done
4 The state in which ice, water and vapour coexists in equilibrium is called
A. zero degree celsius
B. zero degree fahrenheit
C. absolute zero
D. 373 K
5 The motion of molecules in gases is:
A. Orderly
B. Random
C. Circular
D. All of these
6 The relationship between Boltzmann constant k with R and NAis given as:
A. k = RNA
B. k =R/NA
C. k = NR/NA
D. None of these
7 For the working of a heat engine, there must be
A. a source of heat at high temperature
B. a sink at low temperature
C. both of them
D. none of them
8 The internal energy of an ideal gas system is generally the
A. translational K.E of molecules
B. vibrational K.E of molecules
C. rotational K.E of molecules
D. all of them
9 Which of the following is not an example of adiabatic process
A. the rapid escape of air from a burst type
B. the rapid expansion and compression of air through which a sound wave is passing
C. cloud formation in the atmosphere
D. none of them
10 The behaviour of gases is well accounted by the kinetic theory based on
A. microscopic approach
B. macroscopic approach
C. both of them
D. none of them

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