Mass Transfer question bank (Question Bank . Paper 73) Section- 12

1.At what percentage (by volume) of alcohol composition, it forms an azeotrope wit






2. At what percentage (by volume) of alcohol composition, it forms an azeotrope wit






3. Large scale usage of flash distillation is practised in






4.When adsorption hysteresis is observed, the desorption equilibrium pressure is __________ that obtained by adsorption






5.Tray spacing in a distillation column of dia 10-12 ft. used in petroleum refinery may be around __________ inches.






6.Entrainer used in azeotropic distillation should .






7. Ion exchange process is similar to






8. Can the efficiency of a plate in the distillation tower be greater than 100% ?






9. The operating cost of a distillation column at minimum reflux ratio is






10.Which of the following processes is not an example of adsorption applied to gaseous separations ?






11. Polar organic compounds are normally used as separating agents for the azeotropic and extractive distillation. Which of the following is the most important factor to be considered for the choice of the separating agent for extractive distillation?






12.Define molecular diffusion.






13. State Fick ‘s Law of Diffusion.






14.Write the material balance equation in counter current absorption






15. Define mass transfer coefficient






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