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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)

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

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Mass Transfer
Very tall packed towers are divided into series of beds to

Avoid channelling
Avoid flooding
Reduce the overall pressure drop
Reduce liquid hold-up

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Mass Transfer
Molecular seives are porous

None of these
Alumina
Synthetic zeolites crystals/metal alumino-silicates
Silica

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Mass Transfer
The Schmidt number which is defined as, μ/ρ D, is the ratio of the

None of these
Momentum diffusivity to the thermal diffusivity
Thermal diffusivity to the mass diffusivity
Momentum diffusivity to the mass dif-fusivity

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Mass Transfer
Small dia distillation column can be a

Bubble cap
Packed column
Any of these
Sieve tray

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Mass Transfer
______ extractor uses centrifugal force for separating the two phases.

Podbielniak
None of the listed here
Schiebel
Treybal

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