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Chemical Engineering Thermodynamics

Chemical Engineering Thermodynamics
Heat requirement for decomposition of a compound into its elements is __________ that is evolved during the formation of that compound from its elements.

Different than
Less than
The same
Greater than

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Chemical Engineering Thermodynamics
Water on heating from 1 to 4°C

May contract or expand
Expands
Contracts
Has same volume

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Chemical Engineering Thermodynamics
The molar excess Gibbs free energy, gE, for a binary liquid mixture at T and P is given by, (gE/RT) = A . x₁. x₂, where A is a constant. The corresponding equation for ln y₁, where y₁ is the activity co-efficient of component 1, is

Ax₂
Ax₁
A . x₂²
Ax₁²

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Chemical Engineering Thermodynamics
Mollier chart is a __________ plot.

Enthalpy vs entropy
Pressure vs volume
Temperature vs entropy
Pressure vs enthalpy

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

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Chemical Engineering Thermodynamics
The internal energy of an ideal gas does not change in a reversible __________ process.

Isobaric
Isometric
Adiabatic
Isothermal

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