Mass Transfer Penetration theory relates the average mass transfer co-efficient (K) with diffusivity (D) 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 In a packed tower, the value of HETP equals HTUOG, when the equilibrium and the operating lines are (where, HETP = height equivalant to a theoretical plate HTUOG = overall gas phase height of a transfer unit) Neither A nor B Both A & B Parallel Straight Neither A nor B Both A & B Parallel Straight ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Flights in a rotary dryer are provided to Lift and shower the solids thus exposing it thoroughly to the drying action of the gas None of these Increase the residence time of the solid Reduce the residence time of solid Lift and shower the solids thus exposing it thoroughly to the drying action of the gas None of these Increase the residence time of the solid Reduce the residence time of solid ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer HETP is numerically equal to HTU, only when the operating line Lies above the equilibrium line Lies below the equilibrium line And equilibrium lines are parallel Is far from the equilibrium line Lies above the equilibrium line Lies below the equilibrium line And equilibrium lines are parallel Is far from the equilibrium line ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Condensation of a vapour-gas mixture just begins, when (where, p = partial pressure of the vapour P = vapour pressure of the liquid ) P < P P = P P >>P P P < P P = P P >>P P ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer If the specific heats of a gas and a vapor are 0.2KJ/Kg.°K and 1.5 KJ/Kg.°K respectively, and the humidity is 0.01; the humid heat in KJ/°Kg. is 0.017 0.215 0.107 0.31 0.017 0.215 0.107 0.31 ANSWER DOWNLOAD EXAMIANS APP
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