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Mass Transfer

Mass Transfer
Ion exchange process is similar to

Extraction
Absorption
Adsorption
Leaching

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

1/D
D
D0.5
D1.5

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Mass Transfer
At __________ reflux, theoretical number of plates in a distillation coloumn is calculated using Fenske-Underwood equation.

Total
Minimum
Operating
Maximum permissible

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Mass Transfer
If f is defined as above, then which of the following applies to a feed at dew point?

F = 1
0 < f < 1
F < 1
F > 1

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Mass Transfer
Extraction of pencillin employs a __________ extraction coloumn.

None of these
Centrifugal
Plate
Packed

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Mass Transfer
The reason for preferring packed towers over plate towers in distillation practice is that the packed tower operation gives

Low pressure drop and low hold up
Low pressure drop and high hold up
High pressure drop and low hold up
High pressure drop and high hold up

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