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Chemical Engineering Thermodynamics

Chemical Engineering Thermodynamics
The principle applied in liquefaction of gases is

Neither A nor B
Both A and B
Joule-Thomson effect
Adiabatic expansion

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Chemical Engineering Thermodynamics
Vapour which is at a pressure smaller than the saturation pressure for the temperature involved is called a __________ vapour.

Superheated
Desuperheated
Non-condensable
None of these

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

2
3
0
1

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Chemical Engineering Thermodynamics
If heat contents of CH₄, C₂H₄ and C₃H₈ are -17.9, 12.5 and -24.8 kcal/mole respectively, than ΔH for the reaction CH₄(g) + C₂H₄(g) ⇋ C₃H₈(g) will be __________ Kcal.

-55.2
-30.2
55.2
-19.4

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Chemical Engineering Thermodynamics
At equilibrium condition, the chemical potential of a material in different phases in contact with each other is equal. The chemical potential for a real gas (μ) is given by(where, μ = standard chemical potential at unit fugacity (f° = 1 atm.) and the gas behaves ideally.)

μ° + R/T lnf
μ° + RT ln f
μ°+ R lnf
μ° + T lnf

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Chemical Engineering Thermodynamics
Pick out the extensive property out of the following.

Refractive index
Specific heat
Free energy
Surface tension

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