Mass Transfer Penetration theory relates the average mass transfer co-efficient (K) with diffusivity (D) as K ∝ D K ∝ √D K ∝ D2 K ∝ D1.5 K ∝ D K ∝ √D K ∝ D2 K ∝ D1.5 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following quantities need not be fixed before starting the design of a co-current absorber? None of the listed here Heat gain or loss Flow rate of gas Flow rate of entering liquid None of the listed here Heat gain or loss Flow rate of gas Flow rate of entering liquid ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer As the reflux ratio in a distillation coloumn is increased from the minimum, the Number of plates decreases very slowly first and then more and more rapidly Total cost first decreases and then increases Liquid flow increases while the vapor flow decreases for a system Slope of the operating line in stripping section decreases Number of plates decreases very slowly first and then more and more rapidly Total cost first decreases and then increases Liquid flow increases while the vapor flow decreases for a system Slope of the operating line in stripping section decreases ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The binary diffusivity in gases and liquids vary respectively as T and T3/2 T3/2 and T √T and T3/2 T3/2 and √T T and T3/2 T3/2 and T √T and T3/2 T3/2 and √T 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 Remains unaffected Increases Passes through a maximum Decreases Remains unaffected Increases Passes through a maximum Decreases ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Diameter to height ratio for a rashig ring is 2 5 0.5 1 2 5 0.5 1 ANSWER DOWNLOAD EXAMIANS APP
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