The ratio of Murphree plate efficiency to point efficiency is always > 1 in a _______________ flow model? A. Plug B. Perfectly mixed C. Both A. & B. D. Neither A. nor B.
In a packed bed absorption column, the channelling will be noted by the ____________________? A. Increase in flow rateB. Sharp drop in pressure drop C. Sharp rise in pressure drop D. None of these
Mass transfer co-efficient ‘K’ according to penetration theory varies with mass diffusivity as____________________? A. D0.5 B. D C. 1/D D. D1.5
A binary mixture of benzene and cyclohexane is separated by___________________? A. Flash vaporisationB. Extractive distillation C. Solvent extraction D. Ordinary distillation
Plate towers are preferred to packed towers, when large temperature changes are involved, because of the reason that the____________________? A. Packing may be crushed due to thermal expansion/contraction of the components of the equipments B. Pressure drop in the equipment…
The expression, y(1 – x)/x(1 – y) is for_____________________? A. Absorption factorB. Relative volatility C. Selectivity D. Murphree efficiency
In McCabe-Thiele method, at infinite reflux ratio___________________? A. Number of plates is maximum B. Overhead product is maximumC. Both the operating lines coincide with the diagram D. None of these
Weeg in a distillation column_____________________? A. Increases tray efficiency B. Provides large interfacial surface for mass transfer C. Results due to very high gas velocityD. Results due to very low gas velocity
The ratio of Murphree plate efficiency to point efficiency is 1 in a ______________________ flow model? A. PlugB. Perfectly mixed C. Both A. & B. D. Neither A. nor B.
The process employing desorption of the absorbed solute by a solvent is called____________________? A. Elution B. Osmosis C. Reverse osmosis D. Sublimation