Question # 1

A sample of an ideal gas may i) energy adiabatically, or ii) Expand isothermally. the net flow of heat into the gas from the exterior is.

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Positive is each case

Negative for i) and positive for ii)

Zero for i) and positive for ii)

Positive for i) and negative for ii)

Which of the following parameters does not characterize the thermodynamic state of matter.

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Temperature

Pressure

Volume

work

If the specific latent heat of vaporization of oxygen is 214 kJ kg-1 how much heat will be absorbed when 3.0 kg of oxygen is boiled off at its boiling point.

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14 kJ

64 k J

140 kJ

642 k j

A Carnot engine can be 100% efficient of the sink is at.

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0 k

0 oF

0 oC

273 K

What is the represented by the area inside the Carnot cycle.

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Heat taken to increase the body temperature.

Energy loss due to leakage

Useful work done

Heat rejected by the system

Which of the following is an example of irreversible process.

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Melting of ice

Work done against friction

Pettier heating and cooling

All isothermal and adiabatic changes

Which of the following is defined as the amount of heat required to raise the temperature of 1 g of water by 1 ^oC

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Joule

BTO

Electron volt

Calorie

Which of the following phenomenon gives evidence of the molecular structure of mater

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Evaporation

Diffusion

Brownian movement

All of the above

In the free expansion of a perfect gas there is no.

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work done

Heat exchnged

Internal energy changed

All of the above

Which of the following can be used visualize the third law thermodynamics

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Light

Heat

Water

All of these

The behavior of the gases that can be easily liquefied is like that of the.

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Triatomic gases

Ideal gases

Van der walls gases

Dia atomic gases

In general work done on or by a gas depends on.

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The initial state only

The final state only

The initial and final states

The initial state the final state and the path

The actual gas can behave like an ideal gas at

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Low density and high pressure

High density and high pressure

Low density and low pressure

High density and low pressure

What is the internal energy of a mono atomic ideal gas.

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Potential only

Parity kinetic and parity potential

Kinetic only

Neither kinetic nor potential

A heat engine with 100% efficiency would have to

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Do no work

Be at a uniform temperature

Use no heat

Discharge at 0^oC

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

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Volume

Pressure

Temperature

Weight

Difference between the molar heat capacity constant pressure and that a constant volume is equal to

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Root mean square velocity

Mean free path

Boltzmann's constant

Universal gas constant

Which kind of motion is exhibited by molecules of monoatomic gas.

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Rotatory

Vibratory

Translatory

Random

Which law states that a change in the internal energy of a closed thermodynamic system is equal to the difference between the heat supplied to the system and teh amount of work by the system on the surrounding.

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Zeroth law of thermodynamics

First law of thermodynamics

Second law of thermodynamics

Third law of thermodynamics

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

The process in which pressure of the system remains constant.

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Isothermal process

Isochoric process

Isobaric process

Adiabatic process

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