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Mass Transfer

Mass Transfer
Surface renewal model of mass transfer was enunciated by

Fick
Toor and Marchello
Danckwerts
Stefan

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Mass Transfer
The suitable evaporator for concentration of foaming liquids is a __________ evaporator.

Short tube
Falling film
Vacuum
Long tube

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Mass Transfer
Hydrogenation of oil is carried out in a/an __________ in Vanaspati manufacturing plant.

Sieve tray column
Agitated vessel
Bubble cap column
Packed tower

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Mass Transfer
Which of the following is the most suitable for extraction in a system having very low density difference?

Pulsed extractor
Centrifugal extractor
Mixer-settler extractor
Packed extraction tower

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

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

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Mass Transfer
If G = insoluble gas in gas stream and L = non-volatile solvent in liquid stream, then the slope of the operating line for the absorber is

Always < 1
L/G
None of these
G/L

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