Mass Transfer The value of Lewis number (Le = Sc/Pr) for air-water vapour system is around 3.97 600 1 0.24 3.97 600 1 0.24 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Back-trapping in a distillation column Decreases tray efficiency Is desirable, as it provides improved vapour-liquid contact Reduces pressure drop Increases tray efficiency Decreases tray efficiency Is desirable, as it provides improved vapour-liquid contact Reduces pressure drop Increases tray efficiency ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer If the amount of the steam used in steam distillation is increased, the temperature of distillation Remains unchanged Decreases Increases Depends on relative volatility Remains unchanged Decreases Increases Depends on relative volatility ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Positive deviation from Raoult's law means a mixture whose total pressure is None of these Greater than that computed for ideality Less than the sum of the vapour pressure of the components Less than that computed for ideality None of these Greater than that computed for ideality Less than the sum of the vapour pressure of the components Less than that computed for ideality ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer If G = insoluble gas in gas stream and L = non-volatile solvent in liquid stream, then the slope of the operating line for the absorber is None of these G/L Always < 1 L/G None of these G/L Always < 1 L/G ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer What is the degree of freedom of an absorption process in which only one component is transferred between phases? 2 1 4 3 2 1 4 3 ANSWER DOWNLOAD EXAMIANS APP
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