Mass Transfer Fenske's equation for determining the minimum number of theoretical stages in distillation column holds good, when the Mixture (to be separated) shows negative deviation from ideality Mixture (to be separated) shows positive deviation from ideality Multicomponent distillation is involved Relative volatility is reasonably constant Mixture (to be separated) shows negative deviation from ideality Mixture (to be separated) shows positive deviation from ideality Multicomponent distillation is involved Relative volatility is reasonably constant ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Liquid diffusivity is of the order of __________ cm² /second. 0.01 > 1 0.1 10-5 to 10-6 0.01 > 1 0.1 10-5 to 10-6 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In an absorption coloumn, the flooding velocity for random packing is __________ that for stacked/regular packing. Greater than Either A, or B ; depends on the type of packing Smaller than Equal to Greater than Either A, or B ; depends on the type of packing Smaller than Equal to ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Mass transfer co-efficient varies as DAB0.5, according to the __________ theory. Film Surface renewal None of these Penetration Film Surface renewal None of these Penetration ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Compound A is extracted from a solution of A + B into a pure solvent S. A Co-current unit is used for the liquid-liquid extraction. The inlet rate of the solution containing A is 200 moles of B/hr.m² and the solvent flow, rate is 400 moles of S/m². hr. The equilibrium data is represented by Y = 3X² , where Y is in moles of a A/moles of B and X is in moles A/moles of S. The maximum percentage extraction achieved in the unit is 0.9 0.7 0.25 0.5 0.9 0.7 0.25 0.5 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). 200-300 43835 22190 > 500 200-300 43835 22190 > 500 ANSWER DOWNLOAD EXAMIANS APP
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