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Mass Transfer

Mass Transfer
The absorption factor is defined as (where, L = liquid flow rate, G = gas flow rate and, m = slope of the equilibrium line)

L/mG
ML/G
LG/m
G/mL

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Mass Transfer
Sand is dried in foundaries in a___drier.

Vacuum
Rotary
Fluidisedbed
Spray

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Mass Transfer
Chemisorption (chemical adsorption) is

A reversible phenomenon
Characterised by adsorption of heat
An irreversible phenomenon
Same as "Van der Waals" adsorption

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Mass Transfer
During drying operation, it is easier to remove the __________ moisture.

Critical
Bound
Equilibrium
Unbound

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Mass Transfer
Large scale drying of wheat is done in a __________ dryer.

Fluidised bed
Spouted bed
Vacuum rotary
Tray

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Mass Transfer
A natural draft cooling tower is filled with wooden grids, which covers about __________ percent of the tower height.

90-100
30-40
44119
70-80

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