Chemical Engineering Thermodynamics MCQs

Question 1

The expression, nRT In $$\frac{{{{	ext{P}}_1}}}{{{{	ext{P}}_2}}}$$, is for the ____ of an ideal gas.

Accepted Answer

Work done under isothermal condition

Answer

Compressibility

Answer

Work done under adiabatic contition

Answer

Co-efficient of thermal expansion

Question 2

Which of the following is not an intensive property?

Accepted Answer

Heat capacity

Answer

Chemical potential

Answer

Surface tension

Answer

None of these

Question 3

In a reversible process

Accepted Answer

Tds = dE + dW

Answer

DE - dW = Tds

Answer

DW - dE = Tds

Answer

Tds - dW + dE >0

Question 4

Which of the following is not an intensive property?

Accepted Answer

Internal energy

Answer

Molar heat capacity

Answer

Viscosity

Answer

None of these

Question 5

$$\frac{1}{{	ext{V}}}{\left( {\frac{{\partial {	ext{V}}}}{{\partial {	ext{T}}}}} ight)_{	ext{P}}}$$ is the mathematical expression

Accepted Answer

Co-efficient of thermal expansion

Answer

Joule-Thomson co-efficient

Answer

Specific heat at constant pressure (Cp)

Answer

Specific heat at constant volume (CV)

Question 6

Cp - Cv = R is valid for __________ gases.

Accepted Answer

Ideal

Answer

All

Answer

Very high pressure

Answer

Very low temperature

Question 7

The change in Gibbs freee energy for vaporisation of a pure substance is

Accepted Answer

Zero

Answer

Positive

Answer

Negative

Answer

May be positive or negative

Question 8

The chemical potential for a pure substance is __________ its partial molal free energy.

Accepted Answer

Equal to

Answer

More than

Answer

Less than

Answer

Not related to

Question 9

For a given substance at a specified temperature, activity is __________ to fugacity.

Accepted Answer

Directly proportional

Answer

Inversely proportional

Answer

Equal

Answer

None of these