Question # 1

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 ratio between the energy dissipated in some process and the heat that appears as a result is the

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Specific heat

Mechanical equivalent of heat

Kilocalories

Triple point

The gas thermometer is taken as the primary standard because.

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Thermometers are easily reproducible

Readings can be accurately taken

No correction are necessary

It produces he thermodynamic scale

When a solid is melting the temperature remains constant even through heat is being supplied because the

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Heat is being used to break up the intermolecular bonds

Solid is not absorbing any heat

Molecules are moving faster

Molecules are farther a part

Significant motion for the molecules of a monoatomic gas is.

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Rotatory

Vibratory

Translatory

Random

During solid ficain the temperature.

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Remains constant at the freezing point

Increases at the freezing point

Decreases at the freezing point

Decreases at the melting point

No entropy change is associated with

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Isothermal process

Adiabatic process

Isochoric process

Isoteric process

According to kinetic energy of gases one assumes that the collisions between the molecules are.

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Perfectly elastic

Perfectly inelastic

Partly elastic

Partly inelastic

The internal inertia of a thermodynamics system is known as.

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Enthalpy

Entropy

Isotherm

Adiabatic

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

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Weight

Temperature

Pressure

Volume

The number of molecules or atoms in a specific volume of a gas is independent of their

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Volume

Pressure

Size

Temperature

The average K.E. of the molecules of an ideal gas in a closed rigid container is increased by a factor of 4 What happen to the pressure of the gas.

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It remains the same

It increases by a factor of 2

It increases by a factor of 4

It increases by a factor of 8

Thermodynamics deals with

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Isolated systems

The interactions among various parts of the system

The microscopic behavior of a system

The interactions between system and surrounding

The zero point of Kelvin scale is called.

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Critical point

Terminal point

Absolute zero

Mid point

Which quantity is common for systems in thermal equilibrium.

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Heat

Temperature

Momentum

Specific heat

If two gases have same reduced pressure volume and temperature it is according to

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Boyle's law

Charles law

Law of corresponding state

Zeroth law

A given mass of air occupies 12 m2 at normal atmospheric pressure if the pressure is increased to 4 times the original value without changing the temperature what volume will the air occupy.

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3 cm3

6 cm3

9 cm3

12 cm3

A heat engine can develop efficiency equal to 100% if the temperature of the sink is

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Less than that of source

Equal to that of source

0 K

0 ^oC

What is a thermal properly of a material that determines the quantity of energy required to change the phase of a unit mass of that substance.

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Specific heat

Latent heat

Internal energy

Specific energy

Which law states that two given samples of an ideal gas at the same temperature pressure and volume contain the same number of molecules.

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Charles law

Avogadro's

Boyles law

Boizmann law

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

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Volume

Pressure

Temperature

Weight

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