MDCAT Physics Chapter 8 MCQ Test With Answer for (Heat and Thermodynamics)

If you are looking for the MCQs of Chapter 8 of Physics, then you are on the right platform. The candidates can check the MCQs from this platform to prepare for the entry test. MDCAT is the MCQs-based test in which the students have to solve the given questions in the provided time.

MCQ's Test For MDCAT Physics Chapter 8 Heat and Thermodynamics Online Test

Try The MCQ's Test For MDCAT Physics Chapter 8 Heat and Thermodynamics Online Test

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MDCAT Physics Chapter 8 Heat and Thermodynamics Online Test

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Question # 1

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

Question # 2

A process which is carried at constant temperature and Boyle's law can be applied is called:

Question # 3

The equation W = ________𝜟U represents:

Question # 4

No of spark plugs needed in diesel engine is:

Question # 5

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

Question # 6

Number of spark plugs needed in diesel engine is:

Question # 7

Pressure may be defined as_____per second per unit area:

Question # 8

Which of the following does not have the same units:

Question # 9

Hotness and coldness of an object is represented in terms of:

Question # 10

If P is the pressure and V is the volume, Then PV will represent:

Question # 11

The equation PVr = Constant applies to:

Question # 12

The ratio of output work per cycle to input energy per cycle is called:

Question # 13

Brownian motion confirms the truth of :

Question # 14

No entropy change is associated with:

Question # 15

If the temperature difference between hot and cold body is greater the heat engine is:

Question # 16

In thermodynamics, the change in internal energy depends upon:

Question # 17

The nature of thermal radiation is similar to:

Question # 18

Only those processes are probable to take place for which entropy os the system:

Question # 19

The number of molecules in one mole of gas is equal to:

Question # 20

Most motorbikes have ____________ cylinder/s engine but cars usually have _________ cylinders on the same crankshaft.

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Sr.# Question Answer
1 Brownian motion confirms the truth of :
A. Wave theory of light
B. Boyle's law
C. Kinetic theory of gases
D. Adiabatic process
2 The only significant motion possessed by the mono-atomic gas molecules is:
A. Translatory
B. Rotatory
C. Vibratory
D. None of these
3 For a gas obeying Boyle's law, if the pressure is doubled the volume becomes:
A. One half
B. Double
C. Four times
D. None of these
4 If the temperature difference between hot and cold body is greater the heat engine is:
A. Not efficient
B. Less efficient
C. More efficient
D. NOne of above
5 The rate of change of momentum of a molecule is equal to:
A. Pressure
B. Work
C. Density
D. Force
6 A process in which no heat enters or leaves the system is called.
A. Adiabatic process
B. Isothermal process
C. Isochoric process
D. None of these
7 The motion of molecules in gases i:
A. Orderly
B. Random
C. Circular
D. All of these
8 Absolute zero is considered as that temperature at which:
A. All liquids become gases
B. All gases become liquids
C. Water freezes
D. None of these
9 Which of the following does not have the same units:
A. Work
B. Heat
C. Kinetic energy
D. Power
10 The temperature scale approved in SI units is:
A. Calslus scale
B. Kelvin scale
C. Fehrenhelt scale
D. None of these
11 Change in momentum per second is:
A. Product force and time
B. Product of pressure and area
C. Ratio of pressure and area
D. None of these
12 First law of thermodynamics is merely a statement of law of conversation of:
A. Energy
B. Angular momentum
C. Change
D. Linear momentum
13 When a gas is compressed:
A. Its internal energy decreases
B. Its temperature decreases
C. Its temperature increases
D. None of these
14 The equation PVr = Constant applies to:
A. Isothermal process
B. Adiabatic process
C. Isobaric process
D. None of these
15 Carnot cycle is:
A. Reversible
B. Irreversible
C. Sometimes A, Sometimes B
D. None of these
16 Real gases strictly obey gas laws at:
A. High pressures and low temperatures
B. Low pressures and high temperatures
C. High pressures and & temperatures
D. None of these
17 The nature of thermal radiation is similar to:
A. Ultraviolet rays
B. Light rays
C. Both of them
D. None of them
18 If P is the pressure and V is the volume, Then PV will represent:
A. Power
B. Work
C. Force
D. None of these
19 The number of molecules in one mole of gas is equal to:
A. Avogadro number NA
B. Gas constant R
C. Boltzmann constant k
D. None of these
20 In an ideal gas, the molecules have:
A. Kinetic energy only
B. Potential energy only
C. Both KE and PE
D. None of these

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