Mass Transfer As the reflux ratio in a distillation coloumn is increased from the minimum, the Number of plates decreases very slowly first and then more and more rapidly Slope of the operating line in stripping section decreases Total cost first decreases and then increases Liquid flow increases while the vapor flow decreases for a system Number of plates decreases very slowly first and then more and more rapidly Slope of the operating line in stripping section decreases Total cost first decreases and then increases Liquid flow increases while the vapor flow decreases for a system ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The individual mass transfer co-efficients (moles/m² . s) for absorption of a solute from a gas mixture into a liquid solvent are, KL = 4.5 and KG = 1.5. The slope of the equilibrium line is 3. Which of the following resistance (s) is (are) controlling ? Liquid side Gas side Interfacial Both liquid and gas side Liquid side Gas side Interfacial Both liquid and gas side ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Priming in a distillation column Reduces the overall pressure drop Is desirable from point efficiency consideration Results from very low gas velocity Is characterised by the presence of foam throughout the space between trays Reduces the overall pressure drop Is desirable from point efficiency consideration Results from very low gas velocity Is characterised by the presence of foam throughout the space between trays ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following has the same dimension as mass diffusivity? Kinematic viscosity Thermal diffusivity Momentum flux Both Momentum flux & Kinematic viscosity Kinematic viscosity Thermal diffusivity Momentum flux Both Momentum flux & Kinematic viscosity ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In case of physical adsorption, the difference between heat of adsorption and heat of normal condensation is Equal to the heat of wetting Zero Equal to the heat of formation of surface compound Called integral heat of adsorption Equal to the heat of wetting Zero Equal to the heat of formation of surface compound Called integral heat of adsorption ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Free flowing granular materials can be best dried in a __________ drier. Cylinder Drun Rotary Freeze Cylinder Drun Rotary Freeze ANSWER DOWNLOAD EXAMIANS APP
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