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Mass Transfer

Mass Transfer
Paper industry employs __________ driers.

Cylinder
Rotary
Spray
Fluidised bed

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Mass Transfer
Diffusivity in concentrated solutions differs from that in dilute solutions, because of the changes in

Neither A nor B
Both A & B
Degree of ideality of the solution
Viscosity with concentration

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Mass Transfer
Unit operation involved in the prilling of urea is

Both B and C
Evaporation
Drying
Crystallisation

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Mass Transfer
Weeping in a distillation column

Provides large interfacial surface for mass transfer
Results due to very low gas velocity
Results due to very high gas velocity
Increases tray efficiency

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Mass Transfer
Which of the following is not a continuous leaching equipment?

Hydrocyclones
Bollman extractor
Pachuka tank
Kennedy extractor

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Mass Transfer
__________ equation applies to diffusivities in liquids.

None of these
Wilke and Chang
Hirschfelder
Gilliland

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