Mass Transfer
L/mG is the expression for

Slope of operating line in stripper
Absorption factor
Brinkman number
Slope of operating line in absorber

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Mass Transfer
In case of an absorber, the operating

Line always lies below the equilibrium curve
Line always lies above the equilibrium curve
Velocity is more than the loading velocity
Line can be either above or below the equilibrium curve

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Mass Transfer
An aqueous solution of methanol is to be distilled in a tray column. High pressure steam is available as a source of heat. For a given reflux ratio and overhead composition, two options are being explored; (i) a reboiler is used and (ii) no reboiler is used but steam is fed directly to the bottom of the column. As compared to option (i), in option (ii)

Composition of the residue remains unchanged
Less number of trays are required
More number of trays are required and the residue composition is more dilute in methanol
More number of trays are required but the residue composition remains unchanged

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Mass Transfer
A liquid mixture contains 30% o-xylene, 60% p-xylene and 10%. m-xylene (all percentages in w/w). Which of the following statements would be true in respect of this mixture?

The composition of the mixture, in percent by volume is: o-xylene 30, p-xylene 60. and m-xylene 10
The mixture contain optical isomers
The composition of the mixture in mole percent is: o-xylene 30, p-xylene 60 and m-xyoene 10
The mixture exhibits an azeotrope at 101.3 kPa

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