Mass Transfer Channelling is most severe In towers packed with stacked packing In dumped packing of regular units At very high liquid flow rate In towers packed randomly with crushed solids In towers packed with stacked packing In dumped packing of regular units At very high liquid flow rate In towers packed randomly with crushed solids ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The diffusivity (D) in a binary gas mixture is related to the temperature (T) as D ∝ T0.5 D ∝ T D ∝ T1.5 D ∝ T2 D ∝ T0.5 D ∝ T D ∝ T1.5 D ∝ T2 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 8 9 1 10 8 9 1 10 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Large scale drying of wheat is done in a __________ dryer. Spouted bed Fluidised bed Vacuum rotary Tray Spouted bed Fluidised bed Vacuum rotary Tray ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Relative humidity is the ratio of the None of these Partial pressure of the vapour to the vapour pressure of the liquid at gas temperature Partial pressure of the vapour to the vapour pressure of the liquid at room temperature Actual humidity to saturation humidity None of these Partial pressure of the vapour to the vapour pressure of the liquid at gas temperature Partial pressure of the vapour to the vapour pressure of the liquid at room temperature Actual humidity to saturation humidity ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer H₂S is being absorbed in a gas absorber unit. The height of the transfer unit based on the overall mass transfer coefficient on the gas side is 0.4 m. The equilibrium data is given by, y = 1.5 x. The bulk concentration of H₂S has to be reduced from 0.05 to 0.001 mole fraction in the gas side. The height of the tower (in metres) corresponding to an operating line given by, y = 5x + 0.001 is 0.56 1 2 1.56 0.56 1 2 1.56 ANSWER DOWNLOAD EXAMIANS APP
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