CHEMICAL ENGINEERING THERMODYNAMICS QUIZ

The equation Tds = dE - PdV applies to

Single phase fluid of constant composition

Single phase fluid of varying composition

Open as well as closed systems

Both B and C

TRUE ANSWER : ?
YOUR ANSWER : ?

The number of degrees of freedom at the triple point of water is

2

1

Zero

3

TRUE ANSWER : ?
YOUR ANSWER : ?

Which is not constant for an ideal gas?

(∂P/∂V)T

All of these

(∂P/∂V)V

(∂V/∂T)P

TRUE ANSWER : ?
YOUR ANSWER : ?

For spontaneous changes in an isolated system (S = entropy)

Ds <0

Ds = Constant

Ds > 0

Ds = 0

TRUE ANSWER : ?
YOUR ANSWER : ?

When pressure is applied on the system, ice ⟷ water, then

Evaporation of water will take place

Equilibrium can not be established

More water will be formed

More ice will be formed

TRUE ANSWER : ?
YOUR ANSWER : ?

For any system, what is the minimum number of degrees of freedom?

1

3

0

2

TRUE ANSWER : ?
YOUR ANSWER : ?

Third law of thermodynamics is helpful in

Both B and C

Prediction of the extent of a chemical reaction

Evaluating entropy changes of chemical reaction

Calculating absolute entropies of substances at different temperature

TRUE ANSWER : ?
YOUR ANSWER : ?

As pressure approaches zero, the ratio of fugacity to pressure (f/P) for a gas approaches

Zero

Infinity

Unity

An indeterminate value

TRUE ANSWER : ?
YOUR ANSWER : ?

The unit of equilibrium constant of a chemical reaction is the same as that of

None of these

Temperature

Internal energy

Molar concentration

TRUE ANSWER : ?
YOUR ANSWER : ?

Which of the following is true for Virial equation of state?

Virial co-efficients are universal constants

Virial co-efficients are function of temperature only

For some gases, Virial equations and ideal gas equations are the same

Virial co-efficients

TRUE ANSWER : ?
YOUR ANSWER : ?