Mass Transfer Which of these columns incurs the lowest pressure drop? Packed column (with dumped packing) Bubble plate column Packed column (with stacked packing) Pulse column Packed column (with dumped packing) Bubble plate column Packed column (with stacked packing) Pulse column ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Mass transfer co-efficient is defined as Co-efficient = Flux/concentration difference Flux=concentration difference/co-effi-cient None of the listed here Flux = Co-efficient/concentration difference Co-efficient = Flux/concentration difference Flux=concentration difference/co-effi-cient None of the listed here Flux = Co-efficient/concentration difference ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Diffusivity in concentrated solutions differs from that in dilute solutions, because of the changes in Both A & B Neither A nor B Viscosity with concentration Degree of ideality of the solution Both A & B Neither A nor B Viscosity with concentration Degree of ideality of the solution ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer To get high tray efficiency Time of contact between the two phases should be less Liquid entrainment should be severe Gas velocity should be very low Interfacial surface between liquid and gas phase should be large Time of contact between the two phases should be less Liquid entrainment should be severe Gas velocity should be very low Interfacial surface between liquid and gas phase should be large ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Flash distillation is suitable for the separation of components Having very close boiling points Having very wide boiling points Which form maximum boiling azeotrope Which form minimum boiling azeotrope Having very close boiling points Having very wide boiling points Which form maximum boiling azeotrope Which form minimum boiling azeotrope 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 More number of trays are required but the residue composition remains unchanged Less number of trays are required Composition of the residue remains unchanged 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 Less number of trays are required Composition of the residue remains unchanged ANSWER DOWNLOAD EXAMIANS APP
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