Mass Transfer For turbulent mass transfer in pipes, the Sherwood number depends on the Reynolds number as Re0.53 Re0.33 Re Re0.83 Re0.53 Re0.33 Re Re0.83 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer At equilibrium the concentration of water in vapour phase (C*)in kg/m³ of air space and the amount of water (m) adsorbed per kg of dry silica gel are related by, C* = 0.0667m. To maintain dry conditions in a room of air space 100m³ containing 2.2 kg of water vapour initially, 10 kg of dry silica gel is kept in the room. The fraction of initial water remaining in the air space after a long time (during which the temperature is maintained constant) is 0.2 0.4 1 0.2 0.4 1 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer For the gas absorption, the height of a transfer unit, based on the gas phase is given by (G: superficial molar gas velocity, L: superficial molar liquid velocity, FG:mass transfer co-efficient, mols/m² , a: in-terfacial area per unit volume of tower) FG/(G.a) L/(FG.G) (G.a)/FG F/(FG.a) FG/(G.a) L/(FG.G) (G.a)/FG F/(FG.a) ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer With increase in the mass velocity of the gas, the rate of drying during the constant rate period __________ , if the conduction and radiation through the solid are negligible. Increases Increases linearly Remains same Decreases Increases Increases linearly Remains same Decreases ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Molecular distillation is Both B and C High temperature distillation For heat-sensitive materials Very low pressure distillation Both B and C High temperature distillation For heat-sensitive materials Very low pressure distillation ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The Schmidt number which is defined as, μ/ρ D, is the ratio of the Thermal diffusivity to the mass diffusivity None of these Momentum diffusivity to the mass dif-fusivity Momentum diffusivity to the thermal diffusivity Thermal diffusivity to the mass diffusivity None of these Momentum diffusivity to the mass dif-fusivity Momentum diffusivity to the thermal diffusivity ANSWER DOWNLOAD EXAMIANS APP
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