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Mass Transfer

Mass Transfer
Paper industry employs __________ driers.

Fluidised bed
Spray
Rotary
Cylinder

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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.

10
8
12
6

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Mass Transfer
__________ column is preferred to be used, when a high liquid hold up is required in a reactor for gas-liquid reaction.

Bubble
Packed
Tray
Spray

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Mass Transfer
The relative volatility of a binary mixture at the azeotropic composition is

∞
> 1
1

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

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

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Mass Transfer
If moisture content of solid on dry basis is X, then the same on wet basis is

X/(X - 1)
(X - 1)/X
(X + 1)/X
X/(X + 1)

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