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Mass Transfer

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

Fluidised bed
Spouted bed
Vacuum rotary
Tray

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Mass Transfer
Rayleigh's equation applies to __________ distillation.

Steam
Continuous
Differential
Flash

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Mass Transfer
__________ temperature is the steady state temperature attained by a small amount of liquid evaporating into a large quantity of unsaturated gas-vapor mixture.

Wet bulb
Dew point
None of these
Dry bulb

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Mass Transfer
Wetted wall tower experiment determines the

Mass transfer co-efficient
None of these
Molal diffusivity
Volumetric co-efficient

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Mass Transfer
Out of the following gas-liquid contacting devices, for a given set of operating conditions, gas pressure drop is the least in __________ tower.

Packed
Wetted wall
Bubble cap
Perforated tray

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Mass Transfer
Can the efficiency of a plate in the distillation tower be greater than 100%?

Never
Yes ; if the reflux ratio is maximum
Yes
Normally not; but is possible if infinite number of plates are put

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