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MASS TRANSFER

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

None of these
Penetration
Film
Surface renewal

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

Film
Penetration
Surface-renewal
None of these

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Mass Transfer
Minimum reflux ratio in a distillation column results in

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

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

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

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Mass Transfer
Drift in a cooling tower is

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

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