Mass Transfer Mass transfer co-efficient (K) and diffusivity (D) are related according to film theory as K ∝ D K ∝ D2 K ∝ D1.5 K ∝ √D K ∝ D K ∝ D2 K ∝ D1.5 K ∝ √D ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The feed to fractionating column is changed from saturated vapour to saturated liquid. If the separation and reflux ratio remains unchanged, the number of ideal stages will Increase Depend on saturated boiling point; may increase or decrease Remains same Decrease Increase Depend on saturated boiling point; may increase or decrease Remains same Decrease ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Absorption factor method is used to calculate the number of ideal stages, when Operating line lies below the equilibrium line Operating line lies above the equilibrium line Pressure drop in the column is very high Both operating and equilibrium lines are parallel Operating line lies below the equilibrium line Operating line lies above the equilibrium line Pressure drop in the column is very high Both operating and equilibrium lines are parallel ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In case of physical adsorption, the difference between heat of adsorption and heat of normal condensation is Equal to the heat of wetting Equal to the heat of formation of surface compound Zero Called integral heat of adsorption Equal to the heat of wetting Equal to the heat of formation of surface compound Zero Called integral heat of adsorption ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Separation of __________ employs gaseous diffusion process. Isotopes of helium N₂ and O₂ from air SO₂ and air Isotopes of uranium Isotopes of helium N₂ and O₂ from air SO₂ and air Isotopes of uranium ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer With increase in temperature, the leaching rate increases because of the Increased diffusivity None of the listed here Decreased viscosity of liquid Both Decreased viscosity of liquid & Increased diffusivity Increased diffusivity None of the listed here Decreased viscosity of liquid Both Decreased viscosity of liquid & Increased diffusivity ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS