Mass Transfer Binary distillation involves the mass transfer by __________ at the gas-liquid interface. A counter diffusion at an almost equal molar rate Either A or B Unidirectional diffusion from liquid to gas phase Unidirectional diffusion from gas to liquid phase A counter diffusion at an almost equal molar rate Either A or B Unidirectional diffusion from liquid to gas phase Unidirectional diffusion from gas to liquid phase ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In case of __________ distillation, a solvent is added to alter the relative volatility of the mixture to be separated. Azeotropic Molecular Flash Extractive Azeotropic Molecular Flash Extractive ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Steam distillation is used for separation of high boiling none of the listed here Both of the options given here Volatile impurity from still higher boiling substances Substances from non-volatile impurities none of the listed here Both of the options given here Volatile impurity from still higher boiling substances Substances from non-volatile impurities ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer To increase the absorption factor, (where, G = gas flow rate, S = solvent flow rate) Decrease both 'G' and 'S' Increase both 'G' and 'S' Increase 'S' and decrease 'G' Increase 'G' and decrease 'S' Decrease both 'G' and 'S' Increase both 'G' and 'S' Increase 'S' and decrease 'G' Increase 'G' and decrease 'S' 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 1 0.4 0.2 1 0.4 0.2 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The mass diffusivity, the thermal diffusivity and the eddy momentum diffusivity are same for, NPr = NSc = __________ 3 4 2 1 3 4 2 1 ANSWER DOWNLOAD EXAMIANS APP
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