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Mass Transfer

Mass Transfer
Leaching rate is independent of the

Temperature
Particle size
None of the listed here
Agitation

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

Spouted bed
Tray
Vacuum rotary
Fluidised bed

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

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

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Mass Transfer
The suitable evaporator for concentration of foaming liquids is a __________ evaporator.

Short tube
Falling film
Vacuum
Long tube

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Mass Transfer
Pick out the correct relationship. (where, Ri = internal reflux ratio Ro = external reflux ratio. )

(1 - Ro) = Ro/Ri
(1 - Ri) = Ro/Ri
(1 + Ro) = Ro/Ri
(1 + Ri) = Ro/Ri

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Mass Transfer
Moisture in a solid exerting an equilibrium vapour pressure equal to that of the pure liquid at the same temperature is called the __________ moisture.

Critical
Bound
Unbound
Free

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