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.

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.

10

8

12

6

10

8

12

6

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Mass Transfer
A coalescer in a mixer-settler liquid-liquid extraction coloumn

Helps in increasing the bubble size entering the settler

Comprises of thin bed of substances of extended surface having high porosity

Helps in increasing the settling rate of the bubbles

All of these

Helps in increasing the bubble size entering the settler

Comprises of thin bed of substances of extended surface having high porosity

Helps in increasing the settling rate of the bubbles

All of these

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Mass Transfer
Agitator is provided in a crystalliser for

Crystal growth

Avoiding deposition on cooler surfaces

All of these

Formation of nuclei

Crystal growth

Avoiding deposition on cooler surfaces

All of these

Formation of nuclei

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

Called integral heat of adsorption

Equal to the heat of formation of surface compound

Equal to the heat of wetting

Zero

Called integral heat of adsorption

Equal to the heat of formation of surface compound

Equal to the heat of wetting

Zero

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Mass Transfer
With increase in absolute humidity, the dew point of an unsaturated mixture of air and water vapor (at constant pressure and temperature)

Decreases linearly

Remains unchanged

Decreases

Increases

Decreases linearly

Remains unchanged

Decreases

Increases

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Mass Transfer
Which of the following adsorbent is used to decolourise yellow glycerine?

Activated carbon

Fuller

Silica gel

Alumina

Activated carbon

Fuller

Silica gel

Alumina

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Mass Transfer

Mass Transfer A coalescer in a mixer-settler liquid-liquid extraction coloumn

Mass Transfer Agitator is provided in a crystalliser for

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

Mass Transfer With increase in absolute humidity, the dew point of an unsaturated mixture of air and water vapor (at constant pressure and temperature)

Mass Transfer Which of the following adsorbent is used to decolourise yellow glycerine?

Mass Transfer
A coalescer in a mixer-settler liquid-liquid extraction coloumn

Mass Transfer
Agitator is provided in a crystalliser for

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

Mass Transfer
With increase in absolute humidity, the dew point of an unsaturated mixture of air and water vapor (at constant pressure and temperature)

Mass Transfer
Which of the following adsorbent is used to decolourise yellow glycerine?