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Mass Transfer

Mass Transfer
__________ diffusion is used for separating the isotopes of methane.

Force
Pressure
Concentration
Thermal

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Mass Transfer
Overall efficiency of the distillation column is

The ratio of number of ideal plates to actual plates
The ratio of number of actual plates to ideal plates
Same as the Murphree efficiency
Always more than the point efficiency

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Mass Transfer
The absorption factor is defined as (where, L = liquid flow rate, G = gas flow rate and, m = slope of the equilibrium line)

L/mG
G/mL
ML/G
LG/m

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Mass Transfer
The expression, y(1 - x)/x(1 - y) is for

Murphree efficiency
Absorption factor
Relative volatility
Selectivity

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

Cylinder
Rotary
Drun
Freeze

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Mass Transfer
Penetration model (theory) for mass transfer was enunciated by

Danckwerts
Toor and Marchello
Higbie
Kissinevskii

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