Mass Transfer Back-trapping in a distillation column Is desirable, as it provides improved vapour-liquid contact Increases tray efficiency Decreases tray efficiency Reduces pressure drop Is desirable, as it provides improved vapour-liquid contact Increases tray efficiency Decreases tray efficiency Reduces pressure drop ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The feed to fractionating column is changed from saturated vapour to saturated liquid. If the separation and reflux ratio remains unchanged, the number of ideal stages will Depend on saturated boiling point; may increase or decrease Remains same Increase Decrease Depend on saturated boiling point; may increase or decrease Remains same Increase Decrease ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Unit operation involved in the prilling of urea is Evaporation Crystallisation Drying Both B and C Evaporation Crystallisation Drying Both B and C ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer A pure drug is administered as a sphere and as a cube. The amount of drug is the same in the two tablets. Assuming that the shape and size do not influence the mass transfer, the ratio of rate of dissolution in water at t = 0 for the cubic to spherical tablet is 1.04 0.54 1.94 1.24 1.04 0.54 1.94 1.24 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following employs an accessory known as 'drift eliminator' ? Mechanical draft cooling tower Rotating disc contactor Rotary dryer Multiple effect evaporator Mechanical draft cooling tower Rotating disc contactor Rotary dryer Multiple effect evaporator ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The caking of crystals can be prevented by Maintaining high critical humidity Coating the product with inert material Both A and C Maintaining low critical humidity Maintaining high critical humidity Coating the product with inert material Both A and C Maintaining low critical humidity ANSWER DOWNLOAD EXAMIANS APP
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