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Mass Transfer

Mass Transfer
Sand is dried in foundaries in a___drier.

Rotary
Spray
Fluidisedbed
Vacuum

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Mass Transfer
Diffusivity in concentrated solutions differs from that in dilute solutions, because of the changes in

Degree of ideality of the solution
Neither A nor B
Viscosity with concentration
Both A & B

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Mass Transfer
Schmidt number is given by

Re/Pe
Sh x Pe
Re.Pe
Μ/ρDAB

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Mass Transfer
In case of __________ distillation, a solvent is added to alter the relative volatility of the mixture to be separated.

Flash
Azeotropic
Molecular
Extractive

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Mass Transfer
The drying time between fixed moisture contents within the 'constant rate period' is proportional to (assuming that drying occurs from all surfaces of the solid) (where, T = thickness of the solid )

T3
T
√T
T1.5

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Mass Transfer
_______ number indicates the ratio of the rates of the heat and mass transfer incase of a cooling tower.

Lewis
Peclet
Stanton
Sherwood

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