Mass Transfer Mass transfer co-efficient (K) and diffusivity (D) are related according to film theory as K ∝ √D K ∝ D2 K ∝ D K ∝ D1.5 K ∝ √D K ∝ D2 K ∝ D K ∝ D1.5 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following is not fixed by the process requirements, in the design of absorbers? Flow rate of the entering gas None of these Terminal concentrations of gas stream Composition of the entering liquid Flow rate of the entering gas None of these Terminal concentrations of gas stream Composition of the entering liquid ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The binary diffusivity in gases at atmospheric conditions is about 10-3 sec/cm 10-9 cm/sec 10-4 cm²/seC₂ 10-1 cm²/sec 10-3 sec/cm 10-9 cm/sec 10-4 cm²/seC₂ 10-1 cm²/sec 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 < 6:1 > 8:1 > 4 :1 < 8 : 1 < 6:1 > 8:1 > 4 :1 < 8 : 1 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In case of constant underflow extraction operation, the __________ at all solute concentration. Neither A nor B Solids are drained to the same extent Both A & B Ratio of the insoluble to solution is constant Neither A nor B Solids are drained to the same extent Both A & B Ratio of the insoluble to solution is constant ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Absorption factor method is used to calculate the number of ideal stages, when Operating line lies below the equilibrium line Both operating and equilibrium lines are parallel Operating line lies above the equilibrium line Pressure drop in the column is very high Operating line lies below the equilibrium line Both operating and equilibrium lines are parallel Operating line lies above the equilibrium line Pressure drop in the column is very high ANSWER DOWNLOAD EXAMIANS APP
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