Mass Transfer The binary diffusivity in gases at atmospheric conditions is about 10-9 cm/sec 10-3 sec/cm 10-1 cm²/sec 10-4 cm²/seC₂ 10-9 cm/sec 10-3 sec/cm 10-1 cm²/sec 10-4 cm²/seC₂ ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Mass transfer co-efficient (K) and diffusivity (D) are related according to film theory 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 To get high tray efficiency Interfacial surface between liquid and gas phase should be large Gas velocity should be very low Time of contact between the two phases should be less Liquid entrainment should be severe Interfacial surface between liquid and gas phase should be large Gas velocity should be very low Time of contact between the two phases should be less Liquid entrainment should be severe ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Make up water is supplied during cooling tower operation to compensate for water losses due to Evaporation Entrainment Blowdown All of these Evaporation Entrainment Blowdown All of these ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Moisture in a substance exerting an equilibrium vapour pressure less than that of pure liquid at the same temperature is called the __________ moisture. Unbound Bound Critical None of these Unbound Bound Critical None of these ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Diffusivity in concentrated solutions differs from that in dilute solutions, because of the changes in Viscosity with concentration Neither A nor B Both A & B Degree of ideality of the solution Viscosity with concentration Neither A nor B Both A & B Degree of ideality of the solution ANSWER DOWNLOAD EXAMIANS APP
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