Mass Transfer Which of these columns incurs the lowest pressure drop? Bubble plate column Pulse column Packed column (with stacked packing) Packed column (with dumped packing) Bubble plate column Pulse column Packed column (with stacked packing) Packed column (with dumped packing) ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In case of gases, the binary diffusivity is proportional to (where, P = pressure) 1/P √P 1/√P P 1/P √P 1/√P P ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Radioactive nuclear waste is treated in Pulsed column extractor Rotating-disc contactor Bollman extractor Mixer-settler extractor Pulsed column extractor Rotating-disc contactor Bollman extractor Mixer-settler extractor ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The most economical range of absorption factor is 2 to 2.5 2.5 to 3 5 to 10 1.25 to 2 2 to 2.5 2.5 to 3 5 to 10 1.25 to 2 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 0.4 1 0.2 0.4 1 0.2 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In distillation column design, the McCabe-Thiele procedure is inadequate and a Ponchan-Savarit procedure is needed, when Saturated feed is not used The latent heat of vaporisation of the more and less volatile components are greatly different An azeotrope forms A total condenser is used Saturated feed is not used The latent heat of vaporisation of the more and less volatile components are greatly different An azeotrope forms A total condenser is used ANSWER DOWNLOAD EXAMIANS APP
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