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

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

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Mass Transfer
An azeotropic mixture is a __________ mixture.

None of these
Ternary
Binary
Constant boiling point

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Mass Transfer
A minimum boiling azeotrope is exemplified by

Water-isobutyl alcohol
Toluene-benzene
None of these
Acetone-carbon disulphide

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Mass Transfer
Mass transfer co-efficient 'K' according to penetration theory varies with mass dif-fusivity as

D1.5
D
D0.5
1/D

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Mass Transfer
Use of packed towers for distillation is generally limited to the

High pressure operation
Vacuum distillation
Small sizes
Multicomponent distillation

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