Mass Transfer The relative humidity of air decreases in-spite of an increase in the absolute humidity, when the Temperature falls Pressure falls Pressure rises Temperature rises Temperature falls Pressure falls Pressure rises Temperature rises ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Mass transfer co-efficient (K) and diffusivity (D) are related according to film theory as K ∝ D K ∝ D1.5 K ∝ D2 K ∝ √D K ∝ D K ∝ D1.5 K ∝ D2 K ∝ √D ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer At a given equilibrium pressure, with increase in temperature, the concentration of adsorbed gas on solid adsorbant Increases Increases exponentially Decreases Remains unchanged Increases Increases exponentially Decreases Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Heat in BTU necessary to increase the temperature of 1 lb of gas and its accompanying vapour by 1°F is called the Latent heat Humid heat Sensible heat Specific heat Latent heat Humid heat Sensible heat Specific heat ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In a single stage extraction process, 10 kg of pure solvent S (containing no solute A) is mixed with 30 kg of feed F containing A at a mass fraction xf = 0.2. The mixture splits into an extract phase E and a raf-finate phase R containing A at xB = 0.5 and xR = 0.05 respectively. The total mass of the extract phase is (in Kg) 10 6.89 8.89 8.25 10 6.89 8.89 8.25 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Penetration theory states that the mass transfer co-coefficient is equal to (where, De is diffusivity and 't' is time) (4De/πt)1/2 (De/t)1/2 (4De/t) (De.t)1/2 (4De/πt)1/2 (De/t)1/2 (4De/t) (De.t)1/2 ANSWER DOWNLOAD EXAMIANS APP
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