Thermodynamics Test

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Thermodynamics Test - 3

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Weekly Quiz Competition

Question 1
1 / -0

For a good refrigerant which of the following is an undesirable property when present in higher ranges?

A
Latent heat of vaporisation

B
Specific heat

C
Viscosity

D
Specific vapor volume

Solution

The viscosity of a fluid is a measure of its resistance to gradual deformation by shear stress or tensile stress. For liquids, it corresponds to the informal notion of thickness.
Question 2
1 / -0

The process of heating of water under atmospheric pressure is known as ____________

A
adiabatic

B
isobaric

C
isochoric

D
isothermal

Solution

An isothermal process is a change of a system, in which the temperature remains constant: ΔT = 0. This typically occurs when a system is in contact with an outside thermal reservoir (heat bath), and the change occurs slowly enough to allow the system to continually adjust to the temperature of the reservoir through heat exchange.
Question 3
1 / -0

Which of the following terms suits best for a refrigerator?

A
Heat pump

B
Heat engine

C
Carnot engine

D
Turbine

Solution

A heat pump is a device that transfers heat energy from a heat source to a heat sink against a temperature gradient.
Question 4
1 / -0

Which of the following does not possess the characteristics of an intensive property?

A
Viscocity

B
Surface tension

C
Chemical potential

D
Heat capacity

Solution

Heat capacity or thermal capacity, is the measurable physical quantity that specifies the amount of heat required to change the temperature of an object or body by a given amount.
Question 5
1 / -0

If the vapour pressure at two temperatures of a solid phase in equilibrium with its liquid phase are known, then the latent heat of fusion can be calculated by

A
Maxwell's equations

B
Van der Waals equation

C
Nernst heat theorem

D
Clayperon-Claussius equation

Solution

The Claussius-Clayperon equation allows us to estimate the vapour pressure at another temperature, if the vapour pressure is known at some temperature, and if the enthalpy of vaporisation is known.
Question 6
1 / -0

At absolute zero temperature, the entropy of every perfectly crystalline substance becomes zero. Which law is this?

A
Nernst heat theorem

B
Maxwell's relations

C
Third law of thermodynamics

D
Second law of thermodynamics

Solution

The third law of thermodynamics is sometimes stated as the entropy of a perfect crystal at absolute zero is exactly equal to zero.

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Re-Attempt Weekly Quiz Competition

Thermodynamics Test - 3

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Thermodynamics Test - 3

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SHARING IS CARING

Question 1

Latent heat of vaporisation

Specific heat

Viscosity

Specific vapor volume

Solution

Question 2

adiabatic

isobaric

isochoric

isothermal

Solution

Question 3

Heat pump

Heat engine

Carnot engine

Turbine

Solution

Question 4

Viscocity

Surface tension

Chemical potential

Heat capacity

Solution

Question 5

Maxwell's equations

Van der Waals equation

Nernst heat theorem

Clayperon-Claussius equation

Solution

Question 6

Nernst heat theorem

Maxwell's relations

Third law of thermodynamics

Second law of thermodynamics

Solution

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