Mass Transfer During constant rate drying period, vaporisation rate per unit drying surface area Decreases with time Does not change with time Increases with time Does not affect the moisture content of the wet solid Decreases with time Does not change with time Increases with time Does not affect the moisture content of the wet solid ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Inside the distillation columns, the Vapors are not always at their dew points All of these Highest temperatures is near the feed plate Driving force for the liquid flow is its weight Vapors are not always at their dew points All of these Highest temperatures is near the feed plate Driving force for the liquid flow is its weight ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Steady state temperature reached by a small amount of liquid evaporating into a large amount of unsaturated vapour-gas mixture is called the __________ temperature. Wet-bulb Adiabatic saturation Dew point Dry-bulb Wet-bulb Adiabatic saturation Dew point Dry-bulb ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The mass diffusivity, the thermal diffusivity and the eddy momentum diffusivity are same for, NPr = NSc = __________ 1 4 2 3 1 4 2 3 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer At a given equilibrium pressure, with increase in temperature, the concentration of adsorbed gas on solid adsorbant Increases exponentially Decreases Remains unchanged Increases Increases exponentially Decreases Remains unchanged Increases 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) 50 100 1000 500 50 100 1000 500 ANSWER DOWNLOAD EXAMIANS APP
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