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Mass Transfer

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

Tray
Spouted bed
Truck
Rotary

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Mass Transfer
When the psychometric ratio is __________ then the adiabatic saturation temperature and wet bulb temperature becomes equal.

1
?
> 1
< 1

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Mass Transfer
The Schmidt number which is defined as, μ/ρ D, is the ratio of the

Momentum diffusivity to the thermal diffusivity
Momentum diffusivity to the mass dif-fusivity
Thermal diffusivity to the mass diffusivity
None of these

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Mass Transfer
Prandtl number for water at 20°C is about

70
7
0.7
150

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Mass Transfer
A good solvent used for absorption should not have very high

Vapor pressure
Freezing point
All of these
Viscosity

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Mass Transfer
'ADDUCTS' and 'CLATHRATES' are used in case of

None of these
Extractive distillation
Absorption
Crystallisation

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