Mass Transfer The binary diffusivity in gases and liquids vary respectively as T and T3/2 T3/2 and √T T3/2 and T √T and T3/2 T and T3/2 T3/2 and √T T3/2 and T √T and T3/2 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Separation of two or more components of a liquid solution can not be achieved by Evaporation Absorption Liquid extraction Fractional crystallisation Evaporation Absorption Liquid extraction Fractional crystallisation ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer CO₂ can be absorbed by Cold Ca(OH)₂ Heated charcoal Alumina Hot cupric oxide Cold Ca(OH)₂ Heated charcoal Alumina Hot cupric oxide ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The diffusivity (D) in a binary gas mixture is related to the pressure (P) as D ∝ P0.5 D ∝ 1/P1.5 D ∝ 1/P0.5 D ∝ 1/P D ∝ P0.5 D ∝ 1/P1.5 D ∝ 1/P0.5 D ∝ 1/P ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer During the constant rate period of drying of a solid, Increasing the air temperature decreases the drying rate Increased air humidity decreases the rate of drying Surface evaporation of unbound moisture occurs None of these Increasing the air temperature decreases the drying rate Increased air humidity decreases the rate of drying Surface evaporation of unbound moisture occurs None of these 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 Interfacial Gas side Both liquid and gas side Liquid side Interfacial Gas side Both liquid and gas side ANSWER DOWNLOAD EXAMIANS APP
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