Mass Transfer Mechanism of moisture removal in case of freeze drying of food stuff is by Dehydration Sublimation Evaporation Adsorption Dehydration Sublimation Evaporation Adsorption ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Can the efficiency of a plate in the distillation tower be greater than 100%? Normally not; but is possible if infinite number of plates are put Never Yes Yes ; if the reflux ratio is maximum Normally not; but is possible if infinite number of plates are put Never Yes Yes ; if the reflux ratio is maximum ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Wetted wall tower experiment determines the Molal diffusivity Mass transfer co-efficient None of these Volumetric co-efficient Molal diffusivity Mass transfer co-efficient None of these Volumetric co-efficient ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer With decrease in the throughput (compared with the design capacity) for a bubble cap distillation column, its efficiency Remains same Increases May increase or decrease ; depends on individual design Decreases Remains same Increases May increase or decrease ; depends on individual design Decreases 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 0.2 1 0.4 0.2 1 0.4 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Most important factor to be considered in the selection of packings for absorbers is the __________ of packing. Cost Durability Porosity Size Cost Durability Porosity Size ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS