Question # 1

The base unit of temperature in SI is

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Fahrenheit

Celsius

Kelvin

Rnakine

Andrews isothermal helps to messure

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Boiling point

Boyle's temperature

Temperature of inversion

Critical temperature

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

Which of the following has negative specific heat

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Ne

CO2

O2

Sturated vapours

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

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

Which of the following devoices are used for measuring temperature.

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Thermocouples

Thermistors

Thermometers

All of these

Mean free path of gas molecules in inversely proportional to its.

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Weight

Temperature

Pressure

Volume

The temperature of a certain substance in Celsius scale of temperature is 800 ^oC in Kelvin scale it is.

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173 K

931 K

1073 K

1193 K

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

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

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%

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

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

Significant motion for the molecules of a monoatomic gas is.

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Rotatory

Vibratory

Translatory

Random

The specific heat of liquid

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Decreases with temperature

Increases with temperature

Remains constant with change in temperature

Increases with pressure

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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PPSC Physics Chapter 3 Thermal Properties of Matter MCQs With Answers

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