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Mass Transfer

Mass Transfer
The value of L/mG ratio for economical absorption operation ranges from

0.8 to 1.2
1.25 to 2.0
0.5 to 0.8
2.5 to 3.5

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

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

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Mass Transfer
For a fixed number of ideal stages in a distillation column, as the reflux ratio is increased, the difference in composition between the top and bottom product streams

Remains unaffected
Decreases
Increases
Passes through a maximum

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Mass Transfer
Plate efficiency in a distillation column is reduced due to the __________ of liquid.

Weeping & dumping
Entrainment
Foaming
All of these

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Mass Transfer
Which of the following equipments is not used for gas dispersion?

Bubble cap tray towers
Agitated vessels
Spray towers
Perforated sieve tray towers

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Mass Transfer
__________ developed the film theory.

Ergun
Fick
Higbie
Levenspeil

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