Mass Transfer Back-trapping in a distillation column Increases tray efficiency Decreases tray efficiency Reduces pressure drop Is desirable, as it provides improved vapour-liquid contact Increases tray efficiency Decreases tray efficiency Reduces pressure drop Is desirable, as it provides improved vapour-liquid contact ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer When the liquid phase and vapour phase of a binary system obeys Raoult's and Dalton's law respectively, the relative volatility is the ratio of Partial pressure of component A to the total pressure Vapour pressure of component A to that of component B Vapour pressure of component A to the total pressure Vapour pressure of component A to the partial pressure of A Partial pressure of component A to the total pressure Vapour pressure of component A to that of component B Vapour pressure of component A to the total pressure Vapour pressure of component A to the partial pressure of A 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 Solubility of the components of air in water is very small Water has a high latent heat of evaporation They are always equal under all circumstances Lewis number is close to unity Solubility of the components of air in water is very small Water has a high latent heat of evaporation They are always equal under all circumstances ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Chemisorption compared to physical absorption has None of these Increased utilisation of stagnant zones of the liquid phase Lower capacity of the solvent for the solute gas Lower adsorption rate None of these Increased utilisation of stagnant zones of the liquid phase Lower capacity of the solvent for the solute gas Lower adsorption rate ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Relative volatility varies with the concentration of component for an ideal solution. The relative volatity of a binary mixture may be defined as the ratio of vapor pressure of component 'A' to that of component 'B', when Only vapor phase follows Raoult's law Liquid phase obeys Dalton's law and vapor phase obeys Raoult's law Only liquid phase obeys Dalton's law Vapor phase obeys Dalton's law and liquid phase obeys Raoult's law Only vapor phase follows Raoult's law Liquid phase obeys Dalton's law and vapor phase obeys Raoult's law Only liquid phase obeys Dalton's law Vapor phase obeys Dalton's law and liquid phase obeys Raoult's law ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In an absorption coloumn, the flooding velocity for random packing is __________ that for stacked/regular packing. Equal to Smaller than Greater than Either A, or B ; depends on the type of packing Equal to Smaller than Greater than Either A, or B ; depends on the type of packing ANSWER DOWNLOAD EXAMIANS APP
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