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Mass Transfer

Mass Transfer
CO₂ can be absorbed by

Heated charcoal
Alumina
Cold Ca(OH)₂
Hot cupric oxide

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Mass Transfer
_______ number indicates the ratio of the rates of the heat and mass transfer incase of a cooling tower.

Stanton
Peclet
Sherwood
Lewis

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Mass Transfer
Which of the following mixtures does not form an azeotrope at atmosheric pressure?

Butyl acetate-water
None of these
Methyl alcohol-acetone
Water-alcohol

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Mass Transfer
During constant rate drying period, vaporisation rate per unit drying surface area

Does not affect the moisture content of the wet solid
Decreases with time
Increases with time
Does not change with time

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Mass Transfer
The caking of crystals can be prevented by

Maintaining low critical humidity
Maintaining high critical humidity
Both A and C
Coating the product with inert material

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Mass Transfer
Perforated plate towers are unique for solvent extraction because, they provide

Higher contact area
Repeated coalescence & redispersion of the drop phase
Better contact of the phase
None of these

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