Mass Transfer To get high tray efficiency Liquid entrainment should be severe Gas velocity should be very low Interfacial surface between liquid and gas phase should be large Time of contact between the two phases should be less Liquid entrainment should be severe Gas velocity should be very low Interfacial surface between liquid and gas phase should be large Time of contact between the two phases should be less ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer With increase in temperature, the leaching rate increases due to Both A & B Increased diffusivity Neither A nor B Decreased liquid viscosity Both A & B Increased diffusivity Neither A nor B Decreased liquid viscosity 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 Danckwerts developed the __________ theory. Penetration Surface renewal Film None of these Penetration Surface renewal Film None of these ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer For contacting a highly soluble gas with a liquid Bubble the gas through liquid Both of the options given here None of the listed here Spray the liquid on gas stream Bubble the gas through liquid Both of the options given here None of the listed here Spray the liquid on gas stream ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Pick out the wrong statement pertaining to leaching. Fine solids can not be leached in a Pachuka tank Vegetable seeds can be leached in either of Bollman extractor, Rotocel or Kennedy extractor Door classifier can be used for leaching of coarse solids Very high temperature is not needed for the leaching of sugar beet Fine solids can not be leached in a Pachuka tank Vegetable seeds can be leached in either of Bollman extractor, Rotocel or Kennedy extractor Door classifier can be used for leaching of coarse solids Very high temperature is not needed for the leaching of sugar beet ANSWER DOWNLOAD EXAMIANS APP
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