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Mass Transfer

Mass Transfer
Boiling point diagram is not affected by the ambient

Temperature
Both B and C
Humidity
Pressure

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Mass Transfer
Reboiler is considered as one theoretical plate, because

None of these
Of the assumption that vapour and liquid leaving the reboiler are in equilibrium
Reboiler itself contains one plate
Vapour is recycled to the column

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Mass Transfer
Large scale usage of flash distillation is practised in

Ammonia synthesis plant
Petroleum refinning
Soap manufacturing
Polymerisation industry

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Mass Transfer
Most important factor to be considered in the selection of packings for absorbers is the __________ of packing.

Cost
Porosity
Size
Durability

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Mass Transfer
When adsorption hysteresis is observed, the desorption equilibrium pressure is __________ that obtained by adsorption.

Same as
Always higher than
Always lower than
Dependent on the system; can be either lower or higher than

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Mass Transfer
Weeping in a distillation column

Increases tray efficiency
Provides large interfacial surface for mass transfer
Results due to very low gas velocity
Results due to very high gas velocity

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