Mass Transfer Blowdown in a cooling tower Is undesirable All of these Means discarding a small fraction of circulating water to prevent and limit the concentration of salt and impurities Increases the scale forming tendencies of water Is undesirable All of these Means discarding a small fraction of circulating water to prevent and limit the concentration of salt and impurities Increases the scale forming tendencies of water ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Most important factor to be considered in the selection of packings for absorbers is the __________ of packing. Size Durability Porosity Cost Size Durability Porosity Cost ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Mass transfer rate between two fluid phases does not necessarily depend on the __________ of the two phases. Chemical properties Physical properties Degree of turbulence Interfacial area Chemical properties Physical properties Degree of turbulence Interfacial area ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The individual mass transfer co-efficients (moles/m² . s) for absorption of a solute from a gas mixture into a liquid solvent are, KL = 4.5 and KG = 1.5. The slope of the equilibrium line is 3. Which of the following resistance (s) is (are) controlling ? Liquid side Gas side Interfacial Both liquid and gas side Liquid side Gas side Interfacial Both liquid and gas side ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In stripping section of continuous distillation column, the Liquid is enriched with high boiler None of these Vapour is stripped of low boiler Liquid is stripped of high boiler Liquid is enriched with high boiler None of these Vapour is stripped of low boiler Liquid is stripped of high boiler ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer With increase in solvent rate, the number of transfer units, NtoG, for a fixed degree of absorption from a fixed amount of gas Increases Remains same Decreases linearly Decreases Increases Remains same Decreases linearly Decreases ANSWER DOWNLOAD EXAMIANS APP
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