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Mass Transfer

Mass Transfer
The suitable evaporator for concentration of foaming liquids is a __________ evaporator.

Vacuum
Short tube
Falling film
Long tube

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

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

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Mass Transfer
During drying operation, it is easier to remove the __________ moisture.

Unbound
Bound
Equilibrium
Critical

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Mass Transfer
__________ column is preferred to be used, when a high liquid hold up is required in a reactor for gas-liquid reaction.

Bubble
Spray
Packed
Tray

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Mass Transfer
Make up water is supplied during cooling tower operation to compensate for water losses due to

Blowdown
All of these
Evaporation
Entrainment

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Mass Transfer
Leaching of uranium ore and gold ore is done in

None of these
Pachuka tanks
Centrifugal extractor
Bollman extractor

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