Mass Transfer Danckwerts developed the __________ theory. Surface renewal None of these Penetration Film Surface renewal None of these Penetration Film ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Make up water is supplied during cooling tower operation to compensate for water losses due to Entrainment Blowdown Evaporation All of these Entrainment Blowdown Evaporation All of these 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 0.25 0.7 0.5 0.9 0.25 0.7 0.5 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Flash distillation is suitable for separating the constituents of a binary system, which Form constant boiling azeotrope Form minimum boiling azeotrope Have very close boiling points Have very wide boiling points Form constant boiling azeotrope Form minimum boiling azeotrope Have very close boiling points Have very wide boiling points ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Only small amount of evaporation of water produces large cooling effects because of its Small latent heat Large latent heat None of these Low viscosity Small latent heat Large latent heat None of these Low viscosity ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer According to the Fenske equation, what will be the minimum number of plates required in a distillation column to separate an equimolar binary mixture of components A and B into an overhead fraction containing 99 mol% A and a bottom fraction containing 98 mol% B? Assume that relative volatility (αAB = 2) does not change appreciably in the coloumn. 10 6 8 12 10 6 8 12 ANSWER DOWNLOAD EXAMIANS APP
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