Chemical Engineering Thermodynamics MCQs

Question 1

Specific heat of a gas for a reversible adiabatic process is

Accepted Answer

Zero

Answer

Negative

Answer

Infinity

Answer

None of these

Question 2

Entropy change in case of reversible adiabatic process is

Accepted Answer

Zero

Answer

Minimum

Answer

Maximum

Answer

Indeterminate

Question 3

In a homogeneous solution, the activity co-efficient of a component depends upon the

Accepted Answer

All of the above

Answer

Pressure

Answer

Composition

Answer

Temperature

Question 4

In a homogeneous solution, the fugacity of a component depends upon the

Accepted Answer

All of the above

Answer

Pressure

Answer

Composition

Answer

Temperature

Question 5

Solubility of a substance which dissolves with an increase in volume and liberation of heat will be favoured by the

Accepted Answer

Low pressure and low temperature

Answer

Low pressure and high temperature

Answer

High pressure and low temperature

Answer

High pressure and high temperature

Question 6

Third law of thermodynamics is helpful in

Accepted Answer

Both B and C

Answer

Prediction of the extent of a chemical reaction

Answer

Calculating absolute entropies of substances at different temperature

Answer

Evaluating entropy changes of chemical reaction

Question 7

dW and dq are not the exact differential, because q and W are

Accepted Answer

Path functions

Answer

State functions

Answer

Intensive properties

Answer

Extensive properties

Question 8

For a constant volume process

Accepted Answer

dE = CvdT

Answer

dE = CpdT

Answer

dQ = dE + pdV

Answer

dW = pdV

Question 9

Pick out the correct statement.

Accepted Answer

Maximum work is done under reversible conditions

Answer

Like internal energy and enthalphy, the absolute value of standard entropy for elementary substances is zero

Answer

Melting of ice involves increase in enthalpy and a decrease in randomness

Answer

The internal energy of an ideal gas depends only on its pressure