Chemical Engineering — Test 62

The relative saturation of a partially saturated mixture of vapour and gas can be increased by ________________ of the mixture?

For a fixed number of ideal stages in a distillation column, as the reflux ratio is increased, the difference in composition between the top and bottom product streams__________________?

_______________ diffusion is used for separating the isotopes of methane ?

For a distillation column operating at minimum reflux, the_______________________?

According to the film theory of mass transfer, the mass transfer co-efficient is proportional to (where, D = molecular diffusivity) ?

Compound A is extracted from a solution of A + B into a pure solvent S. A Co-current unit is used for the liquid-liquid extraction. The inlet rate of the solution containing A is 200 moles of B/hr.m2 and the solvent flow, rate is 400 moles of S/m2. hr. The equilibrium data is represented by Y = 3X2 , where Y is in moles of a A/moles of B and X is in moles A/moles of S. The maximum percentage extraction achieved in the unit is_________________________?

Which of the following gas-liquid contacting devices incurs the least pressure drop for a particular duty ?

Mass transfer co-efficient is directly proportional to DAB 0.5, according to ________________ theory ?

For experimental determination of mass transfer co-efficient by wetted wall tower, the mass transfer area is___________________?

With decrease in the throughput (compared with the design capacity) for a bubble cap distillation column, its efficiency____________________?