CHEMICAL ENGINEERING THERMODYNAMICS QUIZ

Which of the following is a thermodynamic property of a system?

Concentration

Entropy

Mass

Temperature

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YOUR ANSWER : ?

At normal boiling point, molar entropy of vaporisation is __________ Joule/K°.mole.

92

72

142

192

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YOUR ANSWER : ?

For a reversible process involving only pressure-volume work

(dF)T, p > 0

(dA)T, v < 0

(dF)T, p < 0

(dF)T, p = 0

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Free energy

Remains unchanged in reversible processes carried at constant temperature and pressure

Change during a spontaneous process has a negative value

Decreases in all spontaneous (or irreversible) processes

All of these

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For the reversible exothermic reaction, N₂ + 3H₂ ⇋ 2NH₃, increase of pressure would

Give higher yield of NH₃

Shift the equilibrium towards right

Neither A nor B

Both B and C

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YOUR ANSWER : ?

What is the number of degrees of freedom for liquid water in equilibrium with a mixture of nitrogen and water vapor?

0

2

3

1

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YOUR ANSWER : ?

Entropy of a substance remains constant during a/an __________ change.

None of these

Irreversible isothermal

Reversible adiabatic

Reversible isothermal

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The extensive properties are

Free energy, entropy and enthalpy

Volume, mass and number of moles

Both A and B

None of these

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If an ideal solution is formed by mixing two pure liquids in any proportion, then the __________ of mixing is zero

None of thr listed here

Enthalpy

Volume

Both of the listed here

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Co-efficient of Performance (COP) of a refrigerator is the ratio of the

Lower to higher temperature

Refrigeration obtained to the work required

Higher to lower temperature

Work required to refrigeration obtained

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YOUR ANSWER : ?