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Mass Transfer

Mass Transfer
Mechanism of moisture removal in case of freeze drying of food stuff is by

Sublimation
Adsorption
Evaporation
Dehydration

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Mass Transfer
Paper industry employs __________ driers.

Spray
Fluidised bed
Cylinder
Rotary

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Mass Transfer
For a distillation column operating at minimum reflux, the

Concentration of liquid and vapour leaving a plate will be same
Number of plates required will be maximum
None of these
Reflux ratio will be maximum

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Mass Transfer
Pore size of the molecular seive 5A is __________ mm.

5
0.05
0.5
50

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Mass Transfer
In azeotropic mixture, the equilibrium vapour composition is

Same as liquid composition
None of the listed here
More than liquid composition
Less than liquid composition

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Mass Transfer
In physical terms, Schmidt number means

Momentum diffusivity/mass diffusivity
Thermal diffusivity/mass diffusivity
Mass diffusivity/thermal diffusivity
Thermal diffusivity/momentum diffusivity

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