Mass Transfer - Study Mode
[#621] Can the efficiency of a plate in the distillation tower be greater than 100%?
Correct Answer
(C) Never
[#622] An aqueous solution of methanol is to be distilled in a tray column. High pressure steam is available as a source of heat. For a given reflux ratio and overhead composition, two options are being explored
(i) a reboiler is used and (ii) no reboiler is used but steam is fed directly to the bottom of the column. As compared to option (i), in option (ii)
Correct Answer
(A) Less number of trays are required
[#623] With decrease in the throughput (compared with the design capacity) for a bubble cap distillation column, its efficiency
Correct Answer
(A) Increases
[#624] Can a cooling tower cool water below the wet bulb temperature of inlet air?
Correct Answer
(B) No
[#625] If the specific heats of a gas and a vapor are 0.2KJ/Kg.°K and 1.5 KJ/Kg.°K respectively, and the humidity is 0.01
the humid heat in KJ/°Kg. is
Correct Answer
(D) 0.215