Mass Transfer Surface renewal model of mass transfer was enunciated by Danckwerts Fick Stefan Toor and Marchello Danckwerts Fick Stefan Toor and Marchello ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In case of non-ideal gases and liquids, the molal diffusivity Varies inversely as the pressure Is independent of pressure Is equal to the volumetric diffusivity Varies directly as the pressure Varies inversely as the pressure Is independent of pressure Is equal to the volumetric diffusivity Varies directly as the pressure 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 Composition of the residue remains unchanged More number of trays are required but the residue composition remains unchanged Less number of trays are required More number of trays are required and the residue composition is more dilute in methanol Composition of the residue remains unchanged More number of trays are required but the residue composition remains unchanged Less number of trays are required ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Separation of two volatile liquids by distillation makes use of their Selectivity Relative volatility Solubility Density difference Selectivity Relative volatility Solubility Density difference ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer For the air water system under ambient conditions, the adiabatic saturation temperature and the wet bulb temperature are nearly equal, because Lewis number is close to unity Water has a high latent heat of evaporation They are always equal under all circumstances Solubility of the components of air in water is very small Lewis number is close to unity Water has a high latent heat of evaporation They are always equal under all circumstances Solubility of the components of air in water is very small ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer For continuous drying of grannular or crystalline material, the dryer used is the __________ dryer. None of these Tray Tunnel Rotary None of these Tray Tunnel Rotary ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS