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MASS TRANSFER

Mass Transfer
Mass transfer co-efficient varies as DAB0.5, according to the __________ theory.

None of these
Penetration
Surface renewal
Film

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Mass Transfer
Mass transfer co-efficient is directly proportional to DAB according to the __________ theory.

Surface-renewal
Film
Penetration
None of these

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Mass Transfer
Minimum reflux ratio in a distillation column results in

Maximum condenser size
Minimum number of trays
Minimum reboiler size
Optimum number of trays

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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
Drift in a cooling tower is

Dependent on the water lost by evaporation
The water entrained by the circulating air
All of these
Desirable

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