Mass Transfer According to the film theory of mass transfer, the mass transfer co-efficient is proportional to (where, D = molecular diffusivity) D D2 1/D D0.5 D D2 1/D D0.5 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer At __________ reflux, theoretical number of plates in a distillation coloumn is calculated using Fenske-Underwood equation. Operating Minimum Total Maximum permissible Operating Minimum Total Maximum permissible ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer For __________ drying, the effects of velocity, temperature and humidity of the gas and the thickness of the solid are the same. Constant rate Both A & B Neither A nor B Unsaturated surface Constant rate Both A & B Neither A nor B Unsaturated surface ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The boiling points of pure components of a binary system __________ with increase in total pressure of the system. Remains unchanged Increases May increase or decrease, depends on the system Decreases Remains unchanged Increases May increase or decrease, depends on the system 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 The rate of solid-liquid extraction is limited by the Diffusion of the solute through the solvent in the pores to the outside of the particle Diffusion of the solute from the solution in contact with the particle to the main bulk of the solution Phase change of the solute as it dissolves in the solvent All of these Diffusion of the solute through the solvent in the pores to the outside of the particle Diffusion of the solute from the solution in contact with the particle to the main bulk of the solution Phase change of the solute as it dissolves in the solvent All of these ANSWER DOWNLOAD EXAMIANS APP
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