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Mass Transfer

Mass Transfer
Calcium ammonium nitrate (a fertiliser) is dried in a __________ dryer.

Vacuum
Tunnel
Rotary
Tray

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Mass Transfer
Lewis number, which is important in problems involving simultaneous heat and mass transfer, is the ratio of

None of these
Thermal diffusivity to mass diffusivity
Mass diffusivity to momentum diffusivity
Momentum diffusivity to thermal diffusivity

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Mass Transfer
The equipment used in the extraction of highly corrosive radio active liquids is

Spray column
Pulse column
Baffle tower
Mixer settler

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Mass Transfer
Sticky material can be dried in a __________ dryer.

Tray
Fluidised bed
None of these
Rotary

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Mass Transfer
For which of the following unit operations, Lewis number is of significance?

Adsorption
Gas absorption
Humidification
Binary distillation

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Mass Transfer
Rate of leaching increases with increasing

Size of the solid
Temperature
Viscosity of solvent
Pressure

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