Mass Transfer The mass transfer co-efficient for a solid sphere of radius 'a' dissolving in a large volume of quiescent liquid, in which D is the diffusivity of solute, is Dependent on the Reynolds number D/2a Proportional to √D D/a Dependent on the Reynolds number D/2a Proportional to √D D/a ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer When the mixture to be distilled has a very high boiling point and the product material is heat sensitive, the separation technique to be used is __________ distillation. Steam Azerotropic Continuous None of these Steam Azerotropic Continuous None of these ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Absorption accompanied with chemical reaction is exemplified by the absorption of Ammonia in water Benzol present in coke oven gas by wash oil All of these SO₂ in alkaline solution Ammonia in water Benzol present in coke oven gas by wash oil All of these SO₂ in alkaline solution ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In case of constant underflow extraction operation, the __________ at all solute concentration. Solids are drained to the same extent Neither A nor B Ratio of the insoluble to solution is constant Both A & B Solids are drained to the same extent Neither A nor B Ratio of the insoluble to solution is constant Both A & B ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Penetration theory relates the average mass transfer co-efficient (K) with diffusivity (D) as K ∝ D1.5 K ∝ D K ∝ √D K ∝ D2 K ∝ D1.5 K ∝ D K ∝ √D K ∝ D2 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The interfacial area per unit volume of dispersion, in a gas-liquid contactor, for fractional hold up of gas = 0.1 and gas bubble diameter = 0.5 mm is given by (in m²/m³) 100 500 50 1000 100 500 50 1000 ANSWER DOWNLOAD EXAMIANS APP
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