Mass Transfer Steam distillation is not recommended to be used, if the Liquids decompose, if distilled directly at atmospheric pressure Azeotropic mixture is to be separated and the final product is miscible with water Material can not be distilled by indirect heating even under low pressure, because of the high boiling temperature Material to be distilled is thermally unstable or has the tendency to react with other components associated with it, at the boiling temperature Liquids decompose, if distilled directly at atmospheric pressure Azeotropic mixture is to be separated and the final product is miscible with water Material can not be distilled by indirect heating even under low pressure, because of the high boiling temperature Material to be distilled is thermally unstable or has the tendency to react with other components associated with it, at the boiling temperature ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The value of NA/(NA + NB) for steady state molecular diffusion of gas 'A' through non-diffusing gas 'B' is 0.5 1 2 ∞ 0.5 1 2 ∞ ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Use of packed towers for distillation is generally limited to the Multicomponent distillation Small sizes Vacuum distillation High pressure operation Multicomponent distillation Small sizes Vacuum distillation High pressure operation ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer At 750°K and 1 atm, the approximate value of Schmidt number for air is 0.1 10 0.01 1 0.1 10 0.01 1 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Fenske equation determines the Optimum reflux ratio Maximum number of ideal plates Minimum number of theoretical plates Height of the distillation column Optimum reflux ratio Maximum number of ideal plates Minimum number of theoretical plates Height of the distillation column ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer To get high tray efficiency 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 Time of contact between the two phases should be less Gas velocity should be very low ANSWER DOWNLOAD EXAMIANS APP
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