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Mass Transfer

Mass Transfer
Large scale drying of wheat is done in a __________ dryer.

Fluidised bed
Tray
Spouted bed
Vacuum rotary

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Mass Transfer
For the gas absorption, the height of a transfer unit, based on the gas phase is given by (G: superficial molar gas velocity, L: superficial molar liquid velocity, FG:mass transfer co-efficient, mols/m² , a: in-terfacial area per unit volume of tower)

(G.a)/FG
L/(FG.G)
FG/(G.a)
F/(FG.a)

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Mass Transfer
__________ diffusion is used for separating the isotopes of methane.

Thermal
Concentration
Pressure
Force

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Mass Transfer
The equipment frequently used for adiabatic humidification-cooling operation with recirculating liquid is

Spray chamber
None of these
Natural draft cooling tower
Induced draft cooling tower

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Mass Transfer
Alcohol is dehydrated using __________ distillation.

Extractive
Azeotropic
Molecular
Steam

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Mass Transfer
Sodium bicarbonate is produced during soda ash manufacture using a __________ tower.

Plate
Baffle
None of these
Packed

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