Mass Transfer Use of packed towers for distillation is generally limited to the Multicomponent distillation Vacuum distillation Small sizes High pressure operation Multicomponent distillation Vacuum distillation Small sizes High pressure operation ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In a counter-current liquid extractor Liquid's flow rate depends upon the temperature and pressure Only one of the liquids may be pumped at any desired rate Both liquids can have any desired flow rate Both liquids flow at fixed rate Liquid's flow rate depends upon the temperature and pressure Only one of the liquids may be pumped at any desired rate Both liquids can have any desired flow rate Both liquids flow at fixed rate ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer A 25 cm x 25 cm x 1 cm flat sheet weighing 1.2 kg initially was dried from both sides under constant drying rate conditions. It took 1500 seconds for the weight of the sheet to reduce to 1.05 kg. Another 1m x 1m x 1cm flat sheet of the same material is to be dried from one side only.Under the same constant drying rate conditions, the time required for drying (in seconds) from its initial weight of 19.2 kg to 17.6 kg is 2000 1000 1500 2500 2000 1000 1500 2500 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. None of these 100 > 100 < 100 None of these 100 > 100 < 100 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer For water-ethanol system, the minimum reflux ratio Cannot be computed Is computed from the intercept of the operating line Is the optimum reflux ratio Is computed from the slope of the upper operating line that is tangent to the equilibrium curve Cannot be computed Is computed from the intercept of the operating line Is the optimum reflux ratio Is computed from the slope of the upper operating line that is tangent to the equilibrium curve ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Weeping in a distillation column Provides large interfacial surface for mass transfer Increases tray efficiency Results due to very high gas velocity Results due to very low gas velocity Provides large interfacial surface for mass transfer Increases tray efficiency Results due to very high gas velocity Results due to very low gas velocity ANSWER DOWNLOAD EXAMIANS APP
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