Mass Transfer The rough value of diffusion co-efficient of water vapor into air at 25°C may be about __________ cm²/sec. 0.25 0.0025 1.25 2.5 0.25 0.0025 1.25 2.5 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Channelling is most severe In towers packed randomly with crushed solids In towers packed with stacked packing At very high liquid flow rate In dumped packing of regular units In towers packed randomly with crushed solids In towers packed with stacked packing At very high liquid flow rate In dumped packing of regular units ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer If the path of liquid across the plate is very long as in case of large diameter tower, Murphree efficiency can be __________ percent. > 100 None of these 100 < 100 > 100 None of these 100 < 100 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In McCabe-Thiele method, at infinite reflux ratio Both the operating lines coincide with diagonal Both A & B The overhead product is minimum Neither A nor B Both the operating lines coincide with diagonal Both A & B The overhead product is minimum Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Humidification involves mass transfer between a pure liquid phase and a fixed gas, which is Soluble in the liquid Insoluble in the liquid Non-ideal in nature At a fixed temperature Soluble in the liquid Insoluble in the liquid Non-ideal in nature At a fixed temperature 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) 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 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 ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS