Mass Transfer In a packed absorption tower, if the equilibrium and operating lines are both straight lines, then the ratio, HETP/HTUOG __________ the absorption factor. Neither A nor B Is one at unity value of Both A and B Increases with increase in Neither A nor B Is one at unity value of Both A and B Increases with increase in ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The caking of crystals can be prevented by Maintaining low critical humidity Both A and C Coating the product with inert material Maintaining high critical humidity Maintaining low critical humidity Both A and C Coating the product with inert material Maintaining high critical humidity ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer For which of the following unit operations, Lewis number is of significance? Gas absorption Binary distillation Adsorption Humidification Gas absorption Binary distillation Adsorption Humidification ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In case of steam distillation, the steam leaving the liquid is not completely saturated with distillate vapour, because Saturated steam is used for steam distillation Temperature is less Mixing of steam with the material being vaporised is not so intimate as to result in equilibrium condition Total pressure is less Saturated steam is used for steam distillation Temperature is less Mixing of steam with the material being vaporised is not so intimate as to result in equilibrium condition Total pressure is less ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer At equilibrium the concentration of water in vapour phase (C*)in kg/m³ of air space and the amount of water (m) adsorbed per kg of dry silica gel are related by, C* = 0.0667m. To maintain dry conditions in a room of air space 100m³ containing 2.2 kg of water vapour initially, 10 kg of dry silica gel is kept in the room. The fraction of initial water remaining in the air space after a long time (during which the temperature is maintained constant) is 1 0.2 0.4 1 0.2 0.4 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Flash distillation is suitable for separating the constituents of a binary system, which Form constant boiling azeotrope Form minimum boiling azeotrope Have very close boiling points Have very wide boiling points Form constant boiling azeotrope Form minimum boiling azeotrope Have very close boiling points Have very wide boiling points ANSWER DOWNLOAD EXAMIANS APP
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