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Mass Transfer

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

K ∝ D
K ∝ D1.5
K ∝ D2
K ∝ √D

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

Surface renewal
Film
Penetration
None of these

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Mass Transfer
In McCabe-Thiele method of theoretical plate calculation for a distillation column, the operating lines of stripping and rectifying sections coincide with the diagonal at __________ reflux.

Maximum permissible
Minimum
Total
Operating

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

None of these
Film
Surface-renewal
Penetration

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Mass Transfer
Minimum reflux ratio in a distillation column results in

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

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Mass Transfer
According to the film theory of mass transfer, the mass transfer co-efficient is proportional to (where, D = molecular diffusivity)

D0.5
D2
1/D
D

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