Mass Transfer Desulphurisation of petrol is done in a Bollman extractor Plate type extraction column Rotating disc extractor Packed extraction column Bollman extractor Plate type extraction column Rotating disc extractor Packed extraction column ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Prandtl number for water at 20°C is about 70 7 0.7 150 70 7 0.7 150 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 KL/DA² √(KL².DA) KL².DA KL²/DA KL/DA² √(KL².DA) KL².DA ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Weeping in a distillation column Provides large interfacial surface for mass transfer Increases tray efficiency Results due to very low gas velocity Results due to very high gas velocity Provides large interfacial surface for mass transfer Increases tray efficiency Results due to very low gas velocity Results due to very high gas velocity ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The humid volume may be increased by increasing the Humidity at constant temperature Neither A nor B Temperature at constant humidity Both A & B Humidity at constant temperature Neither A nor B Temperature at constant humidity Both A & B 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 Decreases linearly Increases Remains unaffected Decreases Decreases linearly Increases Remains unaffected ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS