Chemical Engineering Thermodynamics MCQs

Question 1

The extensive properties are

Accepted Answer

Both A and B

Answer

Volume, mass and number of moles

Answer

Free energy, entropy and enthalpy

Answer

None of these

Question 2

The intensive properties are

Accepted Answer

Both A and B

Answer

Molar volume, density, viscosity and boiling point

Answer

Refractive index and surface tension

Answer

None of these

Question 3

Which of the following has the least thermal efficiency?

Accepted Answer

Steam engine

Answer

Carnot engine

Answer

Diesel engine

Answer

Otto engine

Question 4

When dilute aqueous solutions of two salts are mixed, the process is associated with

Accepted Answer

Increase in temperature

Answer

Decrease in temperature

Answer

No change in temperature

Answer

Change in temperature which is a function of composition

Question 5

A system is said to be isopiestic, if there is no __________ change.

Accepted Answer

Pressure

Answer

Temperature

Answer

Volume

Answer

None of these

Question 6

The third law of thermodynamics states that the

Accepted Answer

Heat capacity of a crystalline solid is zero at absolute zero temperature

Answer

Heat transfer from low temperature to high temperature source is not possible without external work

Answer

Gases having same reduced properties behave similarly

Answer

None of these

Question 7

Cp of a gas at its critical temperature and pressure

Accepted Answer

Becomes infinity

Answer

Becomes zero

Answer

Equals 1 kcal/kmol °K

Answer

Equals 0.24 kcal/kmol °K

Question 8

Heat of reaction at constant volume is identified with __________ change.

Accepted Answer

Internal energy

Answer

Enthalpy

Answer

Either A or B

Answer

Neither A nor B

Question 9

Change of state namely evaportation condensation, freezing and melting is an __________ process.

Accepted Answer

Isothermal

Answer

Adiabatic

Answer

Isobaric

Answer

Isochoric