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Mass Transfer

Mass Transfer
At what percentage (by volume) of alcohol composition, it forms an azeotrope with water?

91.5
95
90
99

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Mass Transfer
For a binary mixture with low relative volatility, continuous rectification to get pure products will require

Low reflux ratio
Less number of trays
High reflux ratio
Small cross-section column

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Mass Transfer
Which of the following is not a batch drier?

Truck drier
Fluidised bed drier
Vacuum shelf drier
Agitated pan drier

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Mass Transfer
The unit of volumetric diffusivity is

Cm²/sec
Cm³/sec
Cm²/seC₂
Cm/sec

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Mass Transfer
Which of the following unit operations makes use of Thiele-Geddes equation?

Liquid-liquid extraction
Multicomponent distillation
Solid-liquid extraction
Multicomponent absorption with chemical reaction

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Mass Transfer
Stacked packing compared to dumped packing

Both A & B
Gives higher pressure drop
Provides poorer contact between the fluids
Gives lower pressure drop

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