Mass Transfer In a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb temperature of 70°F. In this case, the Approach is 10°F Both A & B Neither A nor B Range is 15°F Approach is 10°F Both A & B Neither A nor B Range is 15°F ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Mass transfer co-efficient varies as DAB0.5, according to the __________ theory. None of these Penetration Film Surface renewal None of these Penetration Film Surface renewal ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In distillation columns, the number of bubble caps per tray primarily depends upon the Allowable gas velocity Feed composition Allowable liquid velocity Allowable gas and liquid velocities Allowable gas velocity Feed composition Allowable liquid velocity Allowable gas and liquid velocities ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer At what value of reflux ratio, number of theoretical plates in a distillation column is minimum? ∞ < 1 1 ∞ < 1 1 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Chemisorption compared to physical absorption has Lower adsorption rate None of these Lower capacity of the solvent for the solute gas Increased utilisation of stagnant zones of the liquid phase Lower adsorption rate None of these Lower capacity of the solvent for the solute gas Increased utilisation of stagnant zones of the liquid phase ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The Reynolds number of the liquid was increased 100 fold for a laminar falling film used for gas-liquid contacting. Assuming penetrating theory is applicable, the fold increase in the mass transfer co-efficient (Kc) for the same sytem is 5 10 100 1 5 10 100 1 ANSWER DOWNLOAD EXAMIANS APP
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