CHEMICAL ENGINEERING THERMODYNAMICS QUIZ

Generation of heat by friction is an example of a/an __________ change.

Irreversible

Adiabatic

Isothermal

Reversible

TRUE ANSWER : ?
YOUR ANSWER : ?

No work is done by the system, when a reaction occurs at constant

Volume

Pressure

None of these

Temperature

TRUE ANSWER : ?
YOUR ANSWER : ?

Dry ice is

Solid carbon dioxide

Moisture free ice

None of these

Solid helium

TRUE ANSWER : ?
YOUR ANSWER : ?

An isolated system can exchange __________ with its surroundings.

Matter

Both matter and energy

Energy

Neither matter nor energy

TRUE ANSWER : ?
YOUR ANSWER : ?

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

All of these

Independent of temperature

Independent of pressure

Zero at absolute zero temperature for a perfect crystalline substance

TRUE ANSWER : ?
YOUR ANSWER : ?

COP of a refrigerator drawing 1 kW of power per ton of refrigeration is about

8.5

0.5

3.5

4.5

TRUE ANSWER : ?
YOUR ANSWER : ?

For an isothermal reversible compression of an ideal gas

ΔE = ΔH = 0

Only ΔH =0

Only ΔE = 0

DQ = dE

TRUE ANSWER : ?
YOUR ANSWER : ?

A gas can be liquified by pressure alone only, when its temperature is __________ its critical temperature.

More than

Equal to or higher than

Less than

Less than or equal to

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The free energy change for a chemical reaction is given by (where, K = equilibrium constant)

T lnK

RT lnK

-RT lnK

-R lnK

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

Tds = dE - PdV

DQ = CpdT + Vdp

DQ = CvdT + PdV

DE = Tds - PdV

TRUE ANSWER : ?
YOUR ANSWER : ?

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