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Mass Transfer

Mass Transfer
Sand is dried in foundaries in a___drier.

Fluidisedbed
Vacuum
Spray
Rotary

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Mass Transfer
Cox chart, which is useful in the design of distillation column particularly for petroleum hydrocarbons, is a plot of (where, P = vapor pressure, T = temperature)

T vs . P
Log P vs. log T
P vs . log T
Log P vs . T

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Mass Transfer
Azeotropism for ethyl alcohol-water system disappears by

Decreasing pressure
Increasing pressure
No means
Increasing temperature

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

Sherwood
Peclet
Lewis
Stanton

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Mass Transfer
Gaseous diffusivity at atmospheric pressure is of the order of __________ cm²/second.

1
> 10
5 to 10
1 to 5

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Mass Transfer
Critical humidity of a solid salt means the humidity

Both A and B
Above which it will always become damp
Above Which it will always become dry and below which it will always stay damp
Below which it will always stay dry

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