Mass Transfer
In azeotropic mixture, the equilibrium vapour composition is

Same as liquid composition
More than liquid composition
None of the listed here
Less than liquid composition

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Mass Transfer
Solvent extraction is the terminology applied to the liquid-liquid extraction, which is preferred for the separation of the components of liquids, when

One of the liquid components is heat sensitive
Extracting solvent is cheaply & abundantly available
One of the liquid components has very high affinity towards the solvent
Viscosity of liquid components is very high

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Mass Transfer
One mole feed of a binary mixture of a given composition is flash vaporised at a fixed P and T. If Raoult's law is obeyed, then changing the feed composition would effect

The product composition as well as the fraction vaporised
Neither the product composition nor the fraction vaporised
The product composition but not the fraction vaporised
The fraction vaporised but not the product composition

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