Mass Transfer According to the film theory of mass transfer, the mass transfer co-efficient is proportional to (where, D = molecular diffusivity) 1/D D2 D D0.5 1/D D2 D D0.5 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer When the temperature and humidity of air is low, we usually use __________ draft cooling tower. Forced Natural None of these Induced Forced Natural None of these Induced ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following is the most suitable for extraction in a system having very low density difference? Centrifugal extractor Mixer-settler extractor Pulsed extractor Packed extraction tower Centrifugal extractor Mixer-settler extractor Pulsed extractor Packed extraction tower ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Use of raschig rings in place of crushed stones as packing in packed beds (other things being same) Increases pressure drop, increases surface area Decreases pressure drop, increases surface area Increases pressure drop, decreases surface area Decreases pressure drop, decreases surface area Increases pressure drop, increases surface area Decreases pressure drop, increases surface area Increases pressure drop, decreases surface area Decreases pressure drop, decreases surface area ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The absorption factor is defined as (where, L = liquid flow rate, G = gas flow rate and, m = slope of the equilibrium line) ML/G LG/m G/mL L/mG ML/G LG/m G/mL L/mG ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer For a fixed number of ideal stages in a distillation column, as the reflux ratio is increased, the difference in composition between the top and bottom product streams Decreases Passes through a maximum Increases Remains unaffected Decreases Passes through a maximum Increases Remains unaffected ANSWER DOWNLOAD EXAMIANS APP
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