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Mass Transfer

Mass Transfer
Leaching of coffee from coffee beans is done by

Hexane
Hot water
Lime water
Dilute H₂SO₄ (hot)

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Mass Transfer
In McCabe-Thiele method of theoretical plate calculation for a distillation column, the operating lines of stripping and rectifying sections coincide with the diagonal at __________ reflux.

Total
Minimum
Operating
Maximum permissible

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Mass Transfer
In distillation columns, the number of bubble caps per tray primarily depends upon the

Allowable gas velocity
Feed composition
Allowable liquid velocity
Allowable gas and liquid velocities

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Mass Transfer
Ordinary diffusion process is also called __________ diffusion.

Concentration
Thermal
Pressure
Forced

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Mass Transfer
Extraction of pencillin employs a __________ extraction coloumn.

Plate
None of these
Packed
Centrifugal

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Mass Transfer
Inside the distillation columns, the

Vapors are not always at their dew points
Driving force for the liquid flow is its weight
Highest temperatures is near the feed plate
All of these

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