Mass Transfer Large scale drying of wheat is done in a __________ dryer. Tray Spouted bed Vacuum rotary Fluidised bed Tray Spouted bed Vacuum rotary Fluidised bed ANSWER DOWNLOAD EXAMIANS APP
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 During dehumidification of unsaturated air wet bulb temperature & partial pressure of vapor are not constant. However, during evaporative cooling process with recirculated water supply, the __________ remains constant. Wet bulb temperature Relative humidity Partial pressure of water vapor None of these Wet bulb temperature Relative humidity Partial pressure of water vapor None of these ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Can a cooling tower cool water below the wet bulb temperature of inlet air? Yes ; but the air flow rate should be excessively high No Yes Yes ; but height of cooling tower will be prohibitively high Yes ; but the air flow rate should be excessively high No Yes Yes ; but height of cooling tower will be prohibitively high ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer If a₁ and a₂ are the relative volatilities when the pressure in the distillation column is 1 and 2 atm respectively. Pick out the correct statement. a₁ = 0.5 a₂ None of these a₁ = a₂ a₁ = 2a₂ a₁ = 0.5 a₂ None of these a₁ = a₂ a₁ = 2a₂ ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Acetone is to be removed from air in an isothermal dilute absorber using pure water as solvent. The incoming air contains 5 mole% of acetone (yin = 0.05). The design equation to be used for obtaining the number of trays (N) of the absorber is, N+2 = 6 log (yin/yout).For 98% recovery of acetone, the number of trays required is/are 9 8 1 10 9 8 1 10 ANSWER DOWNLOAD EXAMIANS APP
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