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Mass Transfer

Mass Transfer
Absorption factor, for a fixed degree of absorption from a fixed amount of gas should be

1
< 1
≤ 1
> 1

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Mass Transfer
Penetration theory relates the average mass transfer co-efficient (K) with diffusivity (D) as

K ∝ D2
K ∝ D1.5
K ∝ √D
K ∝ D

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Mass Transfer
Flash distillation is suitable for the separation of components

Which form maximum boiling azeotrope
Having very wide boiling points
Having very close boiling points
Which form minimum boiling azeotrope

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Mass Transfer
Cox chart, which is useful in the design of distillation column particularly for petroleum hydrocarbons, is a plot of (where, P = vapor pressure, T = temperature)

Log P vs. log T
P vs . log T
T vs . P
Log P vs . T

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Mass Transfer
For experimental determination of mass transfer co-efficient by wetted wall tower, the mass transfer area is

Not required
Known
Calculated
Unknown

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Mass Transfer
In rectifying section of a continuous distillation column, the

Liquid is stripped of high boilers
None of these
Vapour is enriched with low boilers
Vapour is enriched with high boilers

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