Mass Transfer If Rm is the minimum reflux ratio, the optimum reflux ratio may be around __________ Rm. 3 to 4 5 2.5 to 3 1.2 to 1.5 3 to 4 5 2.5 to 3 1.2 to 1.5 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Cox chart, which is useful in the design of distillation column particularly for petroleum hydrocarbons, is a plot of (where, P = vapor pressure, T = temperature) T vs . P P vs . log T Log P vs . T Log P vs. log T T vs . P P vs . log T Log P vs . T Log P vs. log T ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following is used for the concentration of rubber latex? Calendria Short tube evaporator Agitated film evaporator Long tube vertical evaporator Calendria Short tube evaporator Agitated film evaporator Long tube vertical evaporator ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following adsorbent is used to decolourise yellow glycerine? Alumina Activated carbon Fuller Silica gel Alumina Activated carbon Fuller Silica gel 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 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
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