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Mass Transfer

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

Tray
Fluidised bed
Spouted bed
Vacuum rotary

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Mass Transfer
For a fixed number of ideal stages in a distillation column, as the reflux ratio is increased, the difference in composition between the top and bottom product streams

Remains unaffected
Passes through a maximum
Decreases
Increases

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Mass Transfer
Steady state equimolal counter diffusion is encountered in

Absorption of NH₃ from air by water
Separation of a binary mixture by distillation
All of these
All liquid-liquid diffusion systems

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Mass Transfer
Psychrometry deals with the properties of gas-vapor mixture. Humidity can be determined by the measurement of the __________ of a fibre.

Strength
Electrical resistance
Thermal conductivity
None of the listed here

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Mass Transfer
Steam distillation is used for separation of high boiling

none of the listed here
Both of the options given here
Substances from non-volatile impurities
Volatile impurity from still higher boiling substances

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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
Viscosity with concentration
Both A & B
Degree of ideality of the solution

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