Mass Transfer Flooding in a vapor-liquid contacting equipment occurs in a tray, when the pressure drop through a tray is __________ the liquid head available in the downcomer. Less than More than Same as Very much less Less than More than Same as Very much less ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer With increase in gas rate, the number of transfer units, NtoG, for a fixed degree of absorption by a fixed amount of solvent Increases Remains unaffected Decreases linearly Decreases Increases Remains unaffected Decreases linearly Decreases ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer For the gas absorption, the height of a transfer unit, based on the gas phase is given by (G: superficial molar gas velocity, L: superficial molar liquid velocity, FG:mass transfer co-efficient, mols/m² , a: in-terfacial area per unit volume of tower) FG/(G.a) L/(FG.G) (G.a)/FG F/(FG.a) FG/(G.a) L/(FG.G) (G.a)/FG F/(FG.a) ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer For a binary mixture with low relative volatility, An azeotrope may be formed during distillation Use molecular distillation Use high pressure distillation Use steam distillation An azeotrope may be formed during distillation Use molecular distillation Use high pressure distillation Use steam distillation ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following increases during evaporative cooling process with recirculated water supply? Both B and C Partial pressure of vapour Wet bulb temperature Relative humidity Both B and C Partial pressure of vapour Wet bulb temperature Relative humidity ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer For a fixed number of ideal stages in a distillation column, as the reflux ratio is increased, the difference in composition between the top and bottom product streams Increases Decreases Remains unaffected Passes through a maximum Increases Decreases Remains unaffected Passes through a maximum ANSWER DOWNLOAD EXAMIANS APP
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