Mass Transfer A solid material shows case hardening properties while drying. Which of the following should be controlled to control the drying process? Flow rate of inlet air Relative humidity of outlet air Humidity of inlet air Temperature of the solid Flow rate of inlet air Relative humidity of outlet air Humidity of inlet air Temperature of the solid ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer 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) More number of trays are required but the residue composition remains unchanged More number of trays are required and the residue composition is more dilute in methanol Less number of trays are required Composition of the residue remains unchanged More number of trays are required but the residue composition remains unchanged More number of trays are required and the residue composition is more dilute in methanol Less number of trays are required Composition of the residue remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The adiabatic saturation curve for a vapour-gas mixture is None of these Straight line Slightly concave upward Slightly concave downward None of these Straight line Slightly concave upward Slightly concave downward ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Wetted wall tower experiment determines the Mass transfer co-efficient Volumetric co-efficient Molal diffusivity None of these Mass transfer co-efficient Volumetric co-efficient Molal diffusivity None of these ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Out of the following gas-liquid contacting devices, for a given set of operating conditions, gas pressure drop is the least in __________ tower. Perforated tray Wetted wall Packed Bubble cap Perforated tray Wetted wall Packed Bubble cap ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In a packed tower, the value of HETP equals HTUOG, when the equilibrium and the operating lines are (where, HETP = height equivalant to a theoretical plate HTUOG = overall gas phase height of a transfer unit) Both A & B Straight Parallel Neither A nor B Both A & B Straight Parallel Neither A nor B ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS