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Online Tests
Physics Fsc Part 1 Chapter 11 Online Test MCQs With Answers
Question # 1
The mean kinetic energy of gas is at.
Choose an answer
0
o
C
-273
o
C
100 K
100
o
C
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Question # 2
Temperature of a gas is increased from 27 oC to 127 oC. The ratio of its mean K.E. will be
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3/4
9/16
4/3
10/9
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Question # 3
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 # 4
The internal energy of a piece of lead when beaten by hammer will.
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Increase
Decrease
Remains constant
Increases and then decrease
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Question # 5
According to first law of thermodynamics the quantity which is conserved.
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Force
Momentum
Energy
Power
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Question # 6
The difference between tow molar capacities is equal to.
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Plank's constant
General gas equation
Molar gas constant
Boltzmann constant
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Question # 7
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 # 8
A cycle of petrol engine undergoes
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Two process
Three process
Four process
single process
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Question # 9
The unit o pressure of gas is
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Nm
-2
Pascal
Atmosphere
All of these
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Question # 10
If the temperature of sink is absolute zero then the efficiency of heat engine engine should be.
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100%
50%
Infinite
zero
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Question # 11
A constant temperature, if pressure of a given mass of gas is halved, then its volume becomes.
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Halve
Doubled
Four time
Constant
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Question # 12
The potential energy to the molecules of an ideal gas is considered to be.
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Maximum
Zero
1/2 kx
2
1/2 kx
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Question # 13
The collision between the gas molecules is
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Elastic
Inelastic
Both a and b
None of these
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Question # 14
The increase in thermal pollution of environment means.
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Increase in the entropy
Decrease in the entropy
Entropy remains constant
Entropy becomes zero
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Question # 15
The curve representing an adiabatic process is called.
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An adiabatic
An isotherm
Both of these
None of these
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Question # 16
If heat is added to a system, then its entropy will.
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Increases and positive
Decrease and positive
Increases but negative
Decreases but negative
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Question # 17
The internal energy of system does not depend on
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Temperature
Pressure
Path
Final and initial state
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Question # 18
Value of triple point of water is given as.
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Zero K
100 K
273.16 K
373.16 K
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