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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
The humid volume may be increased by increasing the

Temperature at constant humidity
Both A & B
Neither A nor B
Humidity at constant temperature

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Mass Transfer
With decrease in the throughput (compared with the design capacity) for a bubble cap distillation column, its efficiency

Remains same
Decreases
May increase or decrease ; depends on individual design
Increases

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Mass Transfer
In case of physical adsorption, the difference between heat of adsorption and heat of normal condensation is

Equal to the heat of formation of surface compound
Equal to the heat of wetting
Called integral heat of adsorption
Zero

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Mass Transfer
According to the Fenske equation, what will be the minimum number of plates required in a distillation column to separate an equimolar binary mixture of components A and B into an overhead fraction containing 99 mol% A and a bottom fraction containing 98 mol% B? Assume that relative volatility (αAB = 2) does not change appreciably in the coloumn.

8
6
10
12

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Mass Transfer
Separation of a mixture of two gases by absorption in the liquid solvent depends upon the difference in their

Solubility
Relative volatility
Viscosity
Density

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