CHEMICAL ENGINEERING THERMODYNAMICS QUIZ

For an ideal solution, the value of activity co-efficient is

> 1

1

< 1

TRUE ANSWER : ?
YOUR ANSWER : ?

Which is an example of closed system?

None of these

Liquid cooling system of an automobile

Air compressor

Boiler

TRUE ANSWER : ?
YOUR ANSWER : ?

Normal temperature and pressure (N.T.P.) corresponds to

0°C and 760 mm Hg

15°C and 760 mm Hg

20°C and 760 mm Hg

0°C and 1 kgf/cm²

TRUE ANSWER : ?
YOUR ANSWER : ?

The difference between isothermal compressibility and adiabatic compressibility for an ideal gas is

+ve

∞

-ve

TRUE ANSWER : ?
YOUR ANSWER : ?

When liquid and vapour phases of one component system are in equilibrium (at a given temperature and pressure), the molar free energy is

Same in both the phases

More in liquid phase

More in vapour phase

Replaced by chemical potential which is more in vapour phase

TRUE ANSWER : ?
YOUR ANSWER : ?

Fugacity co-efficient of a substance is the ratio of its fugacity to

Pressure

Activity

Activity co-efficient

Mole fraction

TRUE ANSWER : ?
YOUR ANSWER : ?

Entropy change in case of reversible adiabatic process is

Maximum

Zero

Indeterminate

Minimum

TRUE ANSWER : ?
YOUR ANSWER : ?

The value of Cp & Cv respectively for monoatomic gases in Kcal/kg Mole . °K are

0.66 & 1.987

1.987 & 0.66

3.987 & 1.987

5 & 3

TRUE ANSWER : ?
YOUR ANSWER : ?

In the ammonia synthesis reaction, N₂ + 3H₂ ⇋ 2NH₃ + 22.4 kcal, the formation of NH₃ will be favoured by

Both low temperature and high pressure

High temperature

Low pressure

Low temperature only

TRUE ANSWER : ?
YOUR ANSWER : ?

4 kg moles of an ideal gas expands in vacuum spontaneously. The work done is

∞

Zero

4 J

8 J

TRUE ANSWER : ?
YOUR ANSWER : ?

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