Mass Transfer Relative humidity is the ratio of the Actual humidity to saturation humidity Partial pressure of the vapour to the vapour pressure of the liquid at room temperature None of these Partial pressure of the vapour to the vapour pressure of the liquid at gas temperature Actual humidity to saturation humidity Partial pressure of the vapour to the vapour pressure of the liquid at room temperature None of these Partial pressure of the vapour to the vapour pressure of the liquid at gas temperature ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In a solution containing 0.30 Kg mole of solute and 600 kg of solvent, the molality is 0.5 1 0.6 2 0.5 1 0.6 2 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer To get high tray efficiency Gas velocity should be very low Time of contact between the two phases should be less Interfacial surface between liquid and gas phase should be large Liquid entrainment should be severe Gas velocity should be very low Time of contact between the two phases should be less Interfacial surface between liquid and gas phase should be large Liquid entrainment should be severe ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Drift in a cooling tower is All of these The water entrained by the circulating air Dependent on the water lost by evaporation Desirable All of these The water entrained by the circulating air Dependent on the water lost by evaporation Desirable ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In the absorption of ammonia in water, the main resistance to absorption is by the __________ phase. Liquid Gas Both A & B Neither A nor B Liquid Gas Both A & B Neither A nor B 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
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