Mass Transfer Penetration theory states that the mass transfer co-coefficient is equal to (where, De is diffusivity and 't' is time) (De.t)1/2 (4De/πt)1/2 (4De/t) (De/t)1/2 (De.t)1/2 (4De/πt)1/2 (4De/t) (De/t)1/2 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In distillation columns, the number of bubble caps per tray primarily depends upon the Allowable liquid velocity Allowable gas and liquid velocities Feed composition Allowable gas velocity Allowable liquid velocity Allowable gas and liquid velocities Feed composition Allowable gas velocity ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer With increase in gas rate, the number of transfer units, NtoG, for a fixed degree of absorption by a fixed amount of solvent Decreases linearly Increases Remains unaffected Decreases Decreases linearly Increases Remains unaffected Decreases ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The value of NA/(NA + NB), for steady state equimolal counter diffusion of two gases 'A' and 'B' is 0.5 1 ∞ 2 0.5 1 ∞ 2 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer If moisture content of solid on dry basis is X, then the same on wet basis is (X - 1)/X (X + 1)/X X/(X - 1) X/(X + 1) (X - 1)/X (X + 1)/X X/(X - 1) X/(X + 1) ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In case of gases, the binary diffusivity is proportional to (where, P = pressure) 1/P √P P 1/√P 1/P √P P 1/√P ANSWER DOWNLOAD EXAMIANS APP
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