Question # 1

Which kind of thermodynamic process is defined as with no heat transfer into or out of a system i.e. Q =0

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Isobaric process

Isochoric process

Isothermal process

Adiabatic process

Triple point of water in Kelvin scale is

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0 K

100 K

273 .15 K

373.15 K

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

The ration of Universal gas constant and Avogadro's number is called.

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Equilibrium constant

Velocity constant

Boitzmann's constant

Gravitational constant

What type of process is the Carnot's cycle.

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Reversible

Irreversible

Neither reversible nor irreversible

May be reversible or irreversible

Most cooking involves

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Adiabatic process

Isothermal process

Isobaric process

Isochoric process

Which of the following is a clinical thermometer.

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Gas thermometer

Mercury thermometer

Alcohol thermometer

Radiation thermometer

How many calories of heat are required to evaporate completely 1 g of ice at 0 ^oC

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480 calories

720 calories

940 calories

1170 calories

What happens to Carnot efficiency if the source temperature increases.

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Decreases

Increases

Remain the same

Becomes zero

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%

Which of the following is a thermodynamic temperature scale.

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Celsius scale

Fahrenheit scale

Kelvin scale

Rankine scale

Which thermodynamic law state taht the entropy of a perfect system approaches zero.

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Zeroth law of thermodynamics

First law of thermodynamics

Second law of thermodynamics

Third law of thermodynamics

During an adiabatic gas expansion the environment

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Serves as a heat sink

Serves as a heat source

Must be at a higher temperature than the gas

Does not have to participate

Because of second law of thermodynamics about the direction of energy flow what is possible.

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Heat

Light

Energy

life

On which parameter internal energy of an ideal gas depends upon.

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Volume

Mass

Pressure

Temperature

Which is the heat transfer mode between an object and its environment due to circular fluid motion.

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Conduction

Convection

Radiation

Mass transfer

The normal Human body temperature in Fahrenheit scale is.

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32 ^oF

40 ^oF

98.4^oF

212 ^oF

Andrews isothermal helps to messure

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Boiling point

Boyle's temperature

Temperature of inversion

Critical temperature

What happen to entropy in an irreversible cycle.

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No gain in entropy

No change in entropy

Loss of entropy

A net gain of entropy

When a liquid is hated retaining its liquid sate then its molecules gain.

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K.E.

P.E

Heat energy

Chemical energy

On which of the following the kinetic theory of gases is not applicable.

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Water vapour

Smoke particles

Bound particles

Free electrons

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