Mass Transfer The commonly used solvent in supercritical extraction is Methyl ethyl ketone Carbon tetrachloride Carbon dioxide Water Methyl ethyl ketone Carbon tetrachloride Carbon dioxide Water ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Mass transfer co-efficient (K) and diffusivity (D) are related according to film theory as K ∝ D2 K ∝ √D K ∝ D1.5 K ∝ D K ∝ D2 K ∝ √D K ∝ D1.5 K ∝ D ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The absorption factor is defined as (where, L = liquid flow rate, G = gas flow rate and, m = slope of the equilibrium line) G/mL L/mG ML/G LG/m G/mL L/mG ML/G LG/m ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following is the most suitable for extraction in a system having very low density difference? Mixer-settler extractor Pulsed extractor Centrifugal extractor Packed extraction tower Mixer-settler extractor Pulsed extractor Centrifugal extractor Packed extraction tower ANSWER DOWNLOAD EXAMIANS APP
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) More number of trays are required and the residue composition is more dilute in methanol Less number of trays are required Composition of the residue remains unchanged More number of trays are required but the residue composition remains unchanged More number of trays are required and the residue composition is more dilute in methanol Less number of trays are required Composition of the residue remains unchanged More number of trays are required but the residue composition remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The humid volume may be increased by increasing the Temperature at constant humidity Humidity at constant temperature Both A & B Neither A nor B Temperature at constant humidity Humidity at constant temperature Both A & B Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
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