Question: According to the Fenske equation, what will be the minimum number of plates required in a distillation column to separate an equimolar binary mixture of components A and B into an overhead fraction containing 99 mol% A and a…

Question: In a single stage extraction process, 10 kg of pure solvent S (containing no solute A) is mixed with 30 kg of feed F containing A at a mass fraction xf = 0.2. The mixture splits into an extract…

Question: In Mcabe-Thiele method, at infinite reflux ratio [A]. number of plates is maximum. [B]. overhead product is maximum. [C]. both the operating lines coincide with the diagram. [D]. none of these. Answer: Option C Explanation: No answer description available…

Question: An alkaline solution is used to reduce the concentration of carbon dioxide in a stream from 10% to 0.1% by absorption with irreversible chemical reaction. The overall number of transfer units based on gas phase is [A]. 9.21 [B].…

Question: A liquid mixture contains 30% o-xylene, 60% p-xylene and 10%. m-xylene (all percentages in w/w). Which of the following statements would be true in respect of this mixture? [A]. The mixture exhibits an azeotrope at 101.3 kPa. [B]. The…

Question: One mole feed of a binary mixture of a given composition is flash vaporised at a fixed P and T. If Raoult’s law is obeyed, then changing the feed composition would effect [A]. the product composition but not the…

Question: As the reflux ratio increases, the slope of the operating line for rectifying section [A]. increases [B]. decreases [C]. remains constant [D]. data insufficient, cannot be predicted Answer: Option A Explanation: No answer description available for this question.

Question: According to the film theory of mass transfer, the mass transfer co-efficient is proportional to (where, D = molecular diffusivity) [A]. D [B]. D2 [C]. D0.5 [D]. 1/D Answer: Option A Explanation: No answer description available for this question.

Question: In distillation columns, the number of bubble caps per tray primarily depends upon the [A]. allowable liquid velocity. [B]. allowable gas velocity. [C]. allowable gas and liquid velocities. [D]. feed composition. Answer: Option C Explanation: No answer description available…

Question: For turbulent mass transfer in pipes, the Sherwood number depends on the Reynolds number as [A]. Re0.33 [B]. Re0.53 [C]. Re0.83 [D]. Re Answer: Option C Explanation: No answer description available for this question.