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Mass Transfer

Mass Transfer
The most economical range of absorption factor is

1.25 to 2
5 to 10
2.5 to 3
2 to 2.5

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Mass Transfer
Large scale usage of flash distillation is practised in

Soap manufacturing
Polymerisation industry
Ammonia synthesis plant
Petroleum refinning

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Mass Transfer
Bound moisture is that liquid which exerts an equilibrium vapor pressure __________ that of the pure liquid at the given temperature.

Either A or B; depends on the solid
Equal to
Less than
More than

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Mass Transfer
On addition of solute in the solvent, the __________ of the solution decreases.

Freezing point
Both B and C
Boiling point
Vapour pressure

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Mass Transfer
_______ number indicates the ratio of the rates of the heat and mass transfer incase of a cooling tower.

Lewis
Sherwood
Stanton
Peclet

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Mass Transfer
The surface renewal frequency in Danckwerts model of mass transfer is given by (KL: mass transfer co-efficient)

KL²/DA
KL/DA²
KL².DA
√(KL².DA)

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