Mass Transfer Gaseous diffusivity at atmospheric pressure is of the order of __________ cm²/second. 5 to 10 1 > 10 1 to 5 5 to 10 1 > 10 1 to 5 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Mass transfer co-efficient is directly proportional to DAB0.5, according to __________ theory. Penetration Surface renewal None of these Film Penetration Surface renewal None of these Film ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The surface renewal frequency in Danckwerts model of mass transfer is given by (KL: mass transfer co-efficient) √(KL².DA) KL²/DA KL².DA KL/DA² √(KL².DA) KL²/DA KL².DA KL/DA² ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Sand is dried in foundaries in a___drier. Rotary Spray Fluidisedbed Vacuum Rotary Spray Fluidisedbed Vacuum ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Use of raschig rings in place of crushed stones as packing in packed beds (other things being same) Decreases pressure drop, increases surface area Increases pressure drop, decreases surface area Increases pressure drop, increases surface area Decreases pressure drop, decreases surface area Decreases pressure drop, increases surface area Increases pressure drop, decreases surface area Increases pressure drop, increases surface area Decreases pressure drop, decreases surface area ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Acetone is to be removed from air in an isothermal dilute absorber using pure water as solvent. The incoming air contains 5 mole% of acetone (yin = 0.05). The design equation to be used for obtaining the number of trays (N) of the absorber is, N+2 = 6 log (yin/yout).For 98% recovery of acetone, the number of trays required is/are 1 8 9 10 1 8 9 10 ANSWER DOWNLOAD EXAMIANS APP
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