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
Mass Transfer For achieving rapid drying rate in a spray dryer, the diameter of the particles in the feed should be in the range of __________ microns (1 mm = 1000 microns). > 500 200-300 22190 43835 > 500 200-300 22190 43835 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The change in enthalpy, when a unit quantity of gas is absorbed by relatively large quantity of adsorbent (on which a definite concentration of the adsorbed gas already exists) is termed as the Heat of wetting None of these Integral heat of adsorption Differential heat of adsorption Heat of wetting None of these Integral heat of adsorption Differential heat of adsorption ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer A 25 cm x 25 cm x 1 cm flat sheet weighing 1.2 kg initially was dried from both sides under constant drying rate conditions. It took 1500 seconds for the weight of the sheet to reduce to 1.05 kg. Another 1m x 1m x 1cm flat sheet of the same material is to be dried from one side only.Under the same constant drying rate conditions, the time required for drying (in seconds) from its initial weight of 19.2 kg to 17.6 kg is 2500 2000 1000 1500 2500 2000 1000 1500 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer When an unsaturated air-water mixture is heated at constant pressure, then The partial pressure of water vapour increases The specific humidity decreases The relative humidity increases The relative humidity decreases The partial pressure of water vapour increases The specific humidity decreases The relative humidity increases The relative humidity decreases ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer For a fixed number of ideal stages in a distillation column, as the reflux ratio is increased, the difference in composition between the top and bottom product streams Passes through a maximum Remains unaffected Decreases Increases Passes through a maximum Remains unaffected Decreases Increases ANSWER DOWNLOAD EXAMIANS APP