CHEMICAL ENGINEERING THERMODYNAMICS QUIZ

Work done in case of free expansion is

Negative

Indeterminate

Zero

None of these

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

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YOUR ANSWER : ?

Which of the following equations is obtained on combining 1st and 2nd law of thermodynamics, for a system of constant mass?

DQ = CpdT + Vdp

DQ = CvdT + PdV

Tds = dE - PdV

DE = Tds - PdV

TRUE ANSWER : ?
YOUR ANSWER : ?

Entropy change for an irreversible isolated system is

> 0

< 0

∞

TRUE ANSWER : ?
YOUR ANSWER : ?

Gibbs-Duhem equation

Finds no application in gas-liquid equilibria involved in distillation

States that n₁dμ₁ + n₂dμ₂ + ....njdμj = 0, for a system of definite composition at constant temperature and pressure

Applies only to binary systems

None of these

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YOUR ANSWER : ?

Melting of wax is accompanied with __________ in entropy.

Decrease

None of these

No change

Increase

TRUE ANSWER : ?
YOUR ANSWER : ?

For a cyclic process, a fixed ratio between heat and work

Is difficult to predict

Never exists

May exist

Always exists

TRUE ANSWER : ?
YOUR ANSWER : ?

At triple point (for one component system), vapour pressure of solid as compared to that of liquid will be

Less

More or less ; depending on the system

More

Same

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YOUR ANSWER : ?

When a system in equilibrium is subjected to a change in temperature, pressure or concentration, the equilibrium is displaced in a direction which tends to undo the effect of the change. This is called the

Kopp's rule

Le-Chatelier principle

Law of corresponding state

Arrehenius hypothesis

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In a P-V diagram (for an ideal gas), an isothermal curve will coincide withan adiabatic curve (through a point), when

Cp < Cv

Cp = Cv

Cp ≥ Cv

Cp > Cv

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YOUR ANSWER : ?