Mass Transfer
Removal of __________ exemplifies an adsorption unit operation.

Uranium from its ore
Water from petrol
None of the listed here
Ammonia from coke oven gas

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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

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

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Mass Transfer
When the liquid phase and vapour phase of a binary system obeys Raoult's and Dalton's law respectively, the relative volatility is the ratio of

Vapour pressure of component A to the partial pressure of A
Vapour pressure of component A to the total pressure
Partial pressure of component A to the total pressure
Vapour pressure of component A to that of component B

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Mass Transfer
A 25 cm x 25 cm x 1 cm flat sheet weighing 1.2 kg initially was dried from both sides under constant drying rate conditions. It took 1500 seconds for the weight of the sheet to reduce to 1.05 kg. Another 1m x 1m x 1cm flat sheet of the same material is to be dried from one side only.Under the same constant drying rate conditions, the time required for drying (in seconds) from its initial weight of 19.2 kg to 17.6 kg is

2000
2500
1000
1500

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Mass Transfer
Flash distillation is

Same as differential distillation
Most useful for handling binary systems
Used for multicomponent systems like crude refining
Same as simple distillation

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