Mass Transfer Wet bulb and dry bulb temperatures becomes identical at __________ percent saturation curve. 100 50 None of these 78 100 50 None of these 78 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Use of raschig rings in place of crushed stones as packing in packed beds (other things being same) Decreases pressure drop, decreases surface area Decreases pressure drop, increases surface area Increases pressure drop, decreases surface area Increases pressure drop, increases surface area Decreases pressure drop, decreases surface area Decreases pressure drop, increases surface area Increases pressure drop, decreases surface area Increases pressure drop, increases surface area ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer For achieving rapid drying rate in a spray dryer, the diameter of the particles in the feed should be in the range of __________ microns (1 mm = 1000 microns). 43835 200-300 22190 > 500 43835 200-300 22190 > 500 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) Less number of trays are required More number of trays are required and the residue composition is more dilute in methanol More number of trays are required but the residue composition remains unchanged Composition of the residue remains unchanged Less number of trays are required More number of trays are required and the residue composition is more dilute in methanol More number of trays are required but the residue composition remains unchanged Composition of the residue remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In a moderately sized packed absorption tower, channeling (which is most severe with stacked packings) can be minimised by taking the ratio of tower diameter to packing diameter > 8:1 < 6:1 > 4 :1 < 8 : 1 > 8:1 < 6:1 > 4 :1 < 8 : 1 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer For the air water system under ambient conditions, the adiabatic saturation temperature and the wet bulb temperature are nearly equal, because Lewis number is close to unity Solubility of the components of air in water is very small They are always equal under all circumstances Water has a high latent heat of evaporation Lewis number is close to unity Solubility of the components of air in water is very small They are always equal under all circumstances Water has a high latent heat of evaporation ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS