Mass Transfer The diffusivity (D) in a binary gas mixture is related to the pressure (P) as D ∝ 1/P0.5 D ∝ 1/P1.5 D ∝ 1/P D ∝ P0.5 D ∝ 1/P0.5 D ∝ 1/P1.5 D ∝ 1/P D ∝ P0.5 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer To get high tray efficiency Time of contact between the two phases should be less Gas velocity should be very low Interfacial surface between liquid and gas phase should be large Liquid entrainment should be severe Time of contact between the two phases should be less Gas velocity should be very low Interfacial surface between liquid and gas phase should be large Liquid entrainment should be severe ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer During bottling of cold drinks (e.g. Pepsi), the main resistance to mass transfer for the absorption of carbon dioxide in water lies in the Gas film Liquid-gas interface Liquid film None of these Gas film Liquid-gas interface Liquid film None of these ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Removal of __________ exemplifies an adsorption unit operation. Ammonia from coke oven gas Uranium from its ore None of the listed here Water from petrol Ammonia from coke oven gas Uranium from its ore None of the listed here Water from petrol ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer If Rm is the minimum reflux ratio, the optimum reflux ratio may be around __________ Rm. 3 to 4 1.2 to 1.5 2.5 to 3 5 3 to 4 1.2 to 1.5 2.5 to 3 5 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer During sensible cooling process Both B and C Relative humidity increases Relative humidity decreases Wet bulb temperature decreases Both B and C Relative humidity increases Relative humidity decreases Wet bulb temperature decreases ANSWER DOWNLOAD EXAMIANS APP
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