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Mass Transfer

Mass Transfer
Free flowing granular materials can be best dried in a __________ drier.

Cylinder
Drun
Rotary
Freeze

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Mass Transfer
NSc/NPr is called the

Stantan number
Sherwood number
Lewis number
Psychrometric ratio

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Mass Transfer
In most of the vacuum crystalliser, vacuum is generally produced by means of a

Suction pump
None of these
Compressed air jet
Steam jet ejector with a barometric condenser

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Mass Transfer
Mass transfer rate between two fluid phases does not necessarily depend on the __________ of the two phases.

Physical properties
Chemical properties
Interfacial area
Degree of turbulence

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Mass Transfer
Flooding results in

Low tray efficiency
Good contact between the fluids
High tray efficiency
High gas velocity

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Mass Transfer
In case of cooling towers, the ratio of the rates of heat and mass transfer is indicated by the __________ number.

None of these
Grashoff
Sherwood
Lewis

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