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PPSC Physics Chapter 3 Thermal Properties of Matter MCQs With Answers
Question # 1
The base unit of temperature in SI is
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Fahrenheit
Celsius
Kelvin
Rnakine
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Question # 2
Andrews isothermal helps to messure
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Boiling point
Boyle's temperature
Temperature of inversion
Critical temperature
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Question # 3
An inflated tyre suddenly bursts As a result of this temperature of the surrounding
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Increases
Descreases
Remains constant
May increase or decrease
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Question # 4
Which of the following has negative specific heat
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Ne
CO2
O2
Sturated vapours
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Question # 5
Woolen clothing a effective in keeping us warm because.
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An trapped int he wool acts as an insulator
Heat loss by convection and radiation is prevented
Wool is bad traciator and good absorber of heat
Wool can retain high temperatures
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Question # 6
Efficiency of a Carnot engine can never be 1 or 100% unless cold reservoir is at absolute temperature.
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0 K
100 K
273 K
373 K
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Question # 7
Which of the following devoices are used for measuring temperature.
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Thermocouples
Thermistors
Thermometers
All of these
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Question # 8
Mean free path of gas molecules in inversely proportional to its.
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Weight
Temperature
Pressure
Volume
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Question # 9
The temperature of a certain substance in Celsius scale of temperature is 800
o
C in Kelvin scale it is.
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173 K
931 K
1073 K
1193 K
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Question # 10
Which quantity must be the same for two bodies if they are to be in thermal equilibrium.
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Internal energy
P.E
Temperature
Mass
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Question # 11
Which of the following is heat transfer by means of the emission or absorption of electromagnetic radiation such as sunshine.
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Conduction or diffusion
Convection
Radiation
Mass transfer
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Question # 12
The highest efficiency of a heat engine whose low temperature is 17 oC and the high temperature of 200 oC is.
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20%
30%
35%
40%
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Question # 13
Under steady state the temperature of a body
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Increase's with time
Decreases with time
Does not charge with time
None of the above
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Question # 14
If pressure and temperature of an ideal gas is doubled and volume is halved, the number of the gas molecules.
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Become half
Remain constant
Become double
Become three times
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Question # 15
Significant motion for the molecules of a monoatomic gas is.
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Rotatory
Vibratory
Translatory
Random
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Question # 16
The specific heat of liquid
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Decreases with temperature
Increases with temperature
Remains constant with change in temperature
Increases with pressure
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Question # 17
In four stroke cycle the crank makes
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One complete revolution
Two complete revolutions
three complete revolutions
Four complete reveolutions
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