Mass Transfer According to the film theory of mass transfer, the mass transfer co-efficient is proportional to (where, D = molecular diffusivity) D2 D 1/D D0.5 D2 D 1/D D0.5 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer At a given equilibrium pressure, with increase in temperature, the concentration of adsorbed gas on solid adsorbant Increases exponentially Increases Decreases Remains unchanged Increases exponentially Increases Decreases Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer During constant rate drying period, vaporisation rate per unit drying surface area Decreases with time Does not change with time Increases with time Does not affect the moisture content of the wet solid Decreases with time Does not change with time Increases with time Does not affect the moisture content of the wet solid ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In an absorption coloumn, the flooding velocity for random packing is __________ that for stacked/regular packing. Smaller than Greater than Equal to Either A, or B ; depends on the type of packing Smaller than Greater than Equal to Either A, or B ; depends on the type of packing ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following has the same dimension as mass diffusivity? Kinematic viscosity Both Momentum flux & Kinematic viscosity Momentum flux Thermal diffusivity Kinematic viscosity Both Momentum flux & Kinematic viscosity Momentum flux Thermal diffusivity ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer For the same process conditions, the reflux ratio of an unlagged distillation column Increases in summer Decreases in winter Increases in winter None of these Increases in summer Decreases in winter Increases in winter None of these ANSWER DOWNLOAD EXAMIANS APP
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