Mass Transfer In distillation column design, the McCabe-Thiele procedure is inadequate and a Ponchan-Savarit procedure is needed, when The latent heat of vaporisation of the more and less volatile components are greatly different Saturated feed is not used A total condenser is used An azeotrope forms The latent heat of vaporisation of the more and less volatile components are greatly different Saturated feed is not used A total condenser is used An azeotrope forms ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Tower diameter may be decreased by Increasing the vapour flow rate Use of increased tray spacing Using higher reflux ratio Increasing the liquid flow rate Increasing the vapour flow rate Use of increased tray spacing Using higher reflux ratio Increasing the liquid flow rate ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In the absorption of ammonia in water, the main resistance to absorption is by the __________ phase. Both A & B Gas Liquid Neither A nor B Both A & B Gas Liquid Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The temperature of water cooled in cooling tower is always __________ temperature of entering air. More than the wet bulb Equal to the wet bulb Less than the wet bulb Equal to the dry bulb More than the wet bulb Equal to the wet bulb Less than the wet bulb Equal to the dry bulb ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The ratio of Murphree plate efficiency to point efficiency is always > 1 in a __________ flow model. None of the listed here Perfectly mixed Plug Both plug & perfectly mixed None of the listed here Perfectly mixed Plug Both plug & perfectly mixed ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Molecular diffusivity of a liquid Is independent of temperature Decreases with temperature May increase or decrease with temperature Increases with temperature Is independent of temperature Decreases with temperature May increase or decrease with temperature Increases with temperature ANSWER DOWNLOAD EXAMIANS APP
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