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Mass Transfer

Mass Transfer
Free flowing granular materials can be best dried in a __________ drier.

Freeze
Drun
Cylinder
Rotary

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Mass Transfer
If f = moles of vapour present per mole of feed, then the slope of feed line is

(1 - f)/f
- (f - 1)/f
- f/(1 - f)
- 1/f

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Mass Transfer
Minimum possible diameter of a packed coloumn is decided mainly by the

Gas viscosity
Liquid hold up
Flooding
Liquid density

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Mass Transfer
Hypersorption refers to a __________ process.

Fixed bed absorption
Moving bed adsorption
Fixed bed adsorption
Moving bed absorption

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Mass Transfer
For a fixed number of ideal stages in a distillation column, as the reflux ratio is increased, the difference in composition between the top and bottom product streams

Decreases
Increases
Passes through a maximum
Remains unaffected

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Mass Transfer
Mass transfer co-efficient 'K' according to penetration theory varies with mass dif-fusivity as

D0.5
D1.5
1/D
D

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