Mass Transfer For water-ethanol system, the minimum reflux ratio Is computed from the slope of the upper operating line that is tangent to the equilibrium curve Cannot be computed Is the optimum reflux ratio Is computed from the intercept of the operating line Is computed from the slope of the upper operating line that is tangent to the equilibrium curve Cannot be computed Is the optimum reflux ratio Is computed from the intercept of the operating line ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer For turbulent mass transfer in pipes, the Sherwood number depends on the Reynolds number as Re0.83 Re0.53 Re Re0.33 Re0.83 Re0.53 Re Re0.33 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Blowdown in a cooling tower All of these Is undesirable Increases the scale forming tendencies of water Means discarding a small fraction of circulating water to prevent and limit the concentration of salt and impurities All of these Is undesirable Increases the scale forming tendencies of water Means discarding a small fraction of circulating water to prevent and limit the concentration of salt and impurities ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer If f = moles of vapour present per mole of feed, then the slope of feed line is (1 - f)/f - (f - 1)/f - f/(1 - f) - 1/f (1 - f)/f - (f - 1)/f - f/(1 - f) - 1/f ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following is an undesirable characteristic for the solvent used in gas absorption? None of these Low viscosity High gas solubility Low vapor pressure None of these Low viscosity High gas solubility Low vapor pressure ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The equipment frequently used for adiabatic humidification-cooling operation with recirculating liquid is Natural draft cooling tower Spray chamber None of these Induced draft cooling tower Natural draft cooling tower Spray chamber None of these Induced draft cooling tower ANSWER DOWNLOAD EXAMIANS APP
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