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Mass Transfer

Mass Transfer
In case of gases, the binary diffusivity is proportional to (where, P = pressure)

√P
1/√P
P
1/P

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Mass Transfer
Separation of two volatile liquids by distillation makes use of their

Relative volatility
Selectivity
Solubility
Density difference

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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.

6
12
8
10

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

Fluidised bed drier
Vacuum shelf drier
Agitated pan drier
Truck drier

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Mass Transfer
With increase in temperature, the rate of extraction in leaching (solid-liquid extraction system)

Remains unaffected
Increases
Increases Linearly
Decreases

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Mass Transfer
Separation of two or more components of a liquid solution can not be achieved by

Absorption
Liquid extraction
Evaporation
Fractional crystallisation

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