CHEMICAL ENGINEERING THERMODYNAMICS QUIZ

Heat pump

Accomplishes only space cooling in summer

Works on Carnot cycle

Accomplishes both A and B

Accomplishes only space heating in winter

TRUE ANSWER : ?
YOUR ANSWER : ?

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

May be positive or negative

Positive

Zero

Negative

TRUE ANSWER : ?
YOUR ANSWER : ?

The entropy change in a reversible isothermal process, when an ideal gas expands to four times its initial volume is

R log10 4

R loge 4

Cv loge 4

Cv log10 4

TRUE ANSWER : ?
YOUR ANSWER : ?

One ton of refrigeration is defined as the heat rate corresponding to melting of one ton of ice in one

Minute

Hour

Second

Day

TRUE ANSWER : ?
YOUR ANSWER : ?

The equation, PV = nRT, is best obeyed by gases at

High pressure & low temperature

Low pressure & low temperature

Low pressure & high temperature

None of these

TRUE ANSWER : ?
YOUR ANSWER : ?

Variation of equilibrium pressure with temperature for any two phases of a given substances is given by the __________ equation.

None of these

Clayperon

Maxwell's

Gibbs-Duhem

TRUE ANSWER : ?
YOUR ANSWER : ?

The partial pressure of each constituent present in an alloy is __________ the total vapor pressure exerted by the alloy.

More than

Either B or C; depends on the type of alloy

Equal to

Less than

TRUE ANSWER : ?
YOUR ANSWER : ?

A refrigeration cycle is the same as a __________ cycle,

Reversed heat engine

Heat engine

None of these

Turbine

TRUE ANSWER : ?
YOUR ANSWER : ?

Entropy, which is a measure of the disorder of a system is

Independent of pressure

Zero at absolute zero temperature for a perfect crystalline substance

Independent of temperature

All of these

TRUE ANSWER : ?
YOUR ANSWER : ?

The root mean square speed of molecules of a gas is equal to (where, m = mass of the molecule K = Boltzman's constant, T = absolute temperature)

√(6KT/m)

√(2KT/m)

√(3KT/m)

3KT/m

TRUE ANSWER : ?
YOUR ANSWER : ?

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