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Mass Transfer

Mass Transfer
Danckwerts developed the __________ theory.

Penetration
Film
None of these
Surface renewal

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Mass Transfer
Absorption accompanied by heat evolution results in

None of these
Decrease in equilibrium solubility
Increase in equilibrium solubility
Increased capacity of the absorber

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Mass Transfer
Prandtl number for water at 20°C is about

7
0.7
150
70

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Mass Transfer
The recovery of pencillin from the acidified fermentation broth is done by

Liquid extraction
Evaporation
Absorption
Distillation

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Mass Transfer
Calcium ammonium nitrate (a fertiliser) is dried in a __________ dryer.

Rotary
Tray
Tunnel
Vacuum

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Mass Transfer
Condensation of a vapour-gas mixture just begins, when (where, p = partial pressure of the vapour P = vapour pressure of the liquid )

P
P = P
P >>P
P < P

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