Plate efficiency_______________________? A. Is a function of the mass transfer between liquid and vapour B. Increases due to foaming C. Increases due to liquid entrainment D. Increases due to weeg and dumg of liquid
Diameter of raschig rings used in packed tower in industry is normally around _____________________ inches? A. 2 B. 8 C. 12 D. 18
In rectifying section of a continuous distillation column, the____________________? A. Vapour is enriched with low boilersB. Vapour is enriched with high boilers C. Liquid is stripped of high boilers D. None of these
The reason for preferring packed towers over plate towers in distillation practice is that the packed tower operation gives___________________? A. Low pressure drop and high hold up B. High pressure drop and low hold upC. Low pressure drop and low…
In Azeotropic mixture, the equilibrium vapour composition is____________________? A. More than liquid composition B. Less than liquid compositionC. Same as liquid composition D. Independent of pressure
Which of the following has the same dimension as mass diffusivity ? A. Momentum flux B. Kinematic viscosity C. Thermal diffusivityD. Both B. and C.
Which of the following decreases during evaporative cooling process with recirculated water supply ? A. Wet bulb temperature B. Relative humidity C. Partial pressure of vapourD. None of these
At what percentage (by volume) of alcohol composition, it forms an azeotrope with water ? A. 90 B. 91.5C. 95 D. 99
It takes 6 hours to dry a wet solid from 50% moisture content to the critical moisture content of 15%. How much longer it will take to dry the solid to 10% moisture content, under the same drying conditions? (The…
Steam distillation is not recommended to be used, if the _____________________? A. Azeotropic mixture is to be separated and the final product is miscible with water B. Liquids decompose, if distilled directly at atmospheric pressure C. Material cannot be distilled…