CHEMICAL ENGINEERING THERMODYNAMICS QUIZ

Enthalpy changes over a constant pressure path are always zero for __________ gas.

Any

An easily liquefiable

A real

A perfect

TRUE ANSWER : ?
YOUR ANSWER : ?

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

No change in temperature

Decrease in temperature

Increase in temperature

Change in temperature which is a function of composition

TRUE ANSWER : ?
YOUR ANSWER : ?

Claude gas liquefaction process employs cooling

By throttling

At constant pressure

None of these

By expansion in an engine

TRUE ANSWER : ?
YOUR ANSWER : ?

Entropy change of mixing two liquid substances depends upon the

Neither A nor B

Quantity (i.e. number of moles)

Both A and B

Molar concentration

TRUE ANSWER : ?
YOUR ANSWER : ?

__________ functions are exemplified by heat and work.

Point

Path

None of these

State

TRUE ANSWER : ?
YOUR ANSWER : ?

Near their critical temperatures, all gases occupy volumes __________ that of the ideal gas.

Half

Same as

More than

Less than

TRUE ANSWER : ?
YOUR ANSWER : ?

Entropy of an ideal gas depends upon its

Temperature

Neither A nor B

Both A & B

Pressure

TRUE ANSWER : ?
YOUR ANSWER : ?

In the equation, PVn = constant, if the value of n = 1, then it represents a reversible __________ process.

Polytropic

Isothermal

Adiabatic

Isobaric

TRUE ANSWER : ?
YOUR ANSWER : ?

In a reversible process

Tds - dW + dE >0

DW - dE = Tds

DE - dW = Tds

Tds = dE + dW

TRUE ANSWER : ?
YOUR ANSWER : ?

In an irreversible process

Tds - dE + dW< 0

DE - dW - Tds = 0

Tds - dT + dW< 0

Tds = dE - dW = 0

TRUE ANSWER : ?
YOUR ANSWER : ?

↑