Mass Transfer In the absorption of ammonia in water, the main resistance to absorption is by the __________ phase. Liquid Neither A nor B Both A & B Gas Liquid Neither A nor B Both A & B Gas ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer When the solvent dissolves very little of solute, then Solvent of low freezing point should be used Very small quantity of solvent is required Large quantity of solvent is required to extract the solute Solvent of low latent heat of vaporisation should be used Solvent of low freezing point should be used Very small quantity of solvent is required Large quantity of solvent is required to extract the solute Solvent of low latent heat of vaporisation should be used 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 Passes through a maximum Increases Remains unaffected Decreases Passes through a maximum Increases Remains unaffected Decreases ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer If a₁ and a₂ are the relative volatilities when the pressure in the distillation column is 1 and 2 atm respectively. Pick out the correct statement. None of these a₁ = 0.5 a₂ a₁ = 2a₂ a₁ = a₂ None of these a₁ = 0.5 a₂ a₁ = 2a₂ a₁ = a₂ ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In case of non-ideal gases and liquids, the molal diffusivity Is equal to the volumetric diffusivity Is independent of pressure Varies directly as the pressure Varies inversely as the pressure Is equal to the volumetric diffusivity Is independent of pressure Varies directly as the pressure Varies inversely as the pressure ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The Reynolds number of the liquid was increased 100 fold for a laminar falling film used for gas-liquid contacting. Assuming penetrating theory is applicable, the fold increase in the mass transfer co-efficient (Kc) for the same sytem is 5 10 1 100 5 10 1 100 ANSWER DOWNLOAD EXAMIANS APP
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