Mass Transfer
On moving the feed line (q-line) from saturated liquid feed (vertical position) to saturated vapor feed (horizontal feed), if the slope of both the operating lines are to be increased, then it will result in

None of these
Greater degree of separation with a fixed number of trays
Increased reboiler load
Increased reflux ratio

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Mass Transfer
Solvent extraction is the terminology applied to the liquid-liquid extraction, which is preferred for the separation of the components of liquids, when

One of the liquid components is heat sensitive
Extracting solvent is cheaply & abundantly available
One of the liquid components has very high affinity towards the solvent
Viscosity of liquid components is very high

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Mass Transfer
Bollman extractor

Employs only counter-current extraction
Is a centrifugal extractor
Is a static bed leaching equipment
Is used for extraction of oil from oilseed

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