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Online Tests
Physics Fsc Part 1 Chapter 11 Online Test MCQs With Answers
Question # 1
the work done in isochoric process is.
Choose an answer
Constant
Variable
Zero
Depend upon condition
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Question # 2
Cloud formation in atmosphere is an example of.
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Isothermal process
Isochoric process
Adiabatic process
Isobaric process
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Question # 3
A heat engine operates between the temperature 1000 K and 400 K, Its efficiency is.
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100%
70%
60%
50%
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Question # 4
The number of spark plug needed in diesel engine is
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0
2
3
4
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Question # 5
Not change in entropy of a system after one complete Carnot cycle is.
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Positive
Negative
Zero
None of these
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Question # 6
If the temperature of a gas is constant then <1/2 mv2> of the molecules of gas will be.
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Constant
Zero
Increase
Decrease
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Question # 7
The ideal gas law is.
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PV =NVk
P = NkT
PV =nRT
P=nRT
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Question # 8
Unite of thermodynamics scale of temperature is.
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Centigrade
Fahrenheit
Kelvin
Celsius
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Question # 9
Force acting on the piston to move outward is.
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Compressive stoke
Power stoke
All stoke
Exhaust stoke
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Question # 10
If heat engine absorb 400 J and rejects 200 J heat energy, its efficiency will be.
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25%
50%
70%
100%
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Question # 11
A cycle of petrol engine undergoes
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Two process
Three process
Four process
single process
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Question # 12
In reversible process the entropy of system.
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Remain constant
Decrease
Increase
Becomes zero
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Question # 13
According to first law of thermodynamics the quantity which is conserved.
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Force
Momentum
Energy
Power
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Question # 14
For an ideal gas, the internal energy is directly proportional to.
Choose an answer
Pressure
volume
Mass
Temperature
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Question # 15
Which one is true for isothermal process.
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Q = 0
W = 0
Q = W(D) Delta U = 0
None of these
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Question # 16
The entropy of the universe with passage of time is.
Choose an answer
Increases
Decreases
Remain constant
Increases and decreases
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Question # 17
The SI unit of product of pressure and volume is.
Choose an answer
Watt
Joule
Pascal
Newton
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