Mass Transfer High pressure at the bottom of a distillation tower handling heat sensitive materials results in Very efficient operation Thermal decomposition of bottoms Increased relative volatility Erosion of the tower Very efficient operation Thermal decomposition of bottoms Increased relative volatility Erosion of the tower ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Gaseous diffusion co-efficient increases with increase in the Pressure Both Pressure & Temperature Temperature None of the listed here Pressure Both Pressure & Temperature Temperature None of the listed here ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer At equilibrium the concentration of water in vapour phase (C*)in kg/m³ of air space and the amount of water (m) adsorbed per kg of dry silica gel are related by, C* = 0.0667m. To maintain dry conditions in a room of air space 100m³ containing 2.2 kg of water vapour initially, 10 kg of dry silica gel is kept in the room. The fraction of initial water remaining in the air space after a long time (during which the temperature is maintained constant) is 0.2 1 0.4 0.2 1 0.4 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer An alkaline solution is used to reduce the concentration of carbon dioxide in a stream from 10% to 0.1% by absorption with irreversible chemical reaction. The overall number of transfer units based on gas phase is 0.001 100 4.605 9.21 0.001 100 4.605 9.21 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The mass transfer co-efficient for a solid sphere of radius 'a' dissolving in a large volume of quiescent liquid, in which D is the diffusivity of solute, is D/2a D/a Dependent on the Reynolds number Proportional to √D D/2a D/a Dependent on the Reynolds number Proportional to √D ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Mechanism of moisture removal in case of freeze drying of food stuff is by Evaporation Adsorption Sublimation Dehydration Evaporation Adsorption Sublimation Dehydration ANSWER DOWNLOAD EXAMIANS APP
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