Mass Transfer The main reason for dividing a tall packed tower into series of small towers is to Avoid flooding Minimise the overall pressure drop Avoid channeling Reduce liquid hold up Avoid flooding Minimise the overall pressure drop Avoid channeling Reduce liquid hold up ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Channelling is most severe In dumped packing of regular units In towers packed randomly with crushed solids In towers packed with stacked packing At very high liquid flow rate In dumped packing of regular units In towers packed randomly with crushed solids In towers packed with stacked packing At very high liquid flow rate ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In a single stage extraction process, 10 kg of pure solvent S (containing no solute A) is mixed with 30 kg of feed F containing A at a mass fraction xf = 0.2. The mixture splits into an extract phase E and a raf-finate phase R containing A at xB = 0.5 and xR = 0.05 respectively. The total mass of the extract phase is (in Kg) 10 8.25 6.89 8.89 10 8.25 6.89 8.89 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Antibiotics are best handled in a Pulsed column extractor Rotating disc contactor Podbielniak extractor Sieve tray contractor Pulsed column extractor Rotating disc contactor Podbielniak extractor Sieve tray contractor ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following gas-liquid contacting devices incurs the least pressure drop for a particular duty? Perforated tray tower Bubble cap tower Wetted wall tower Grid tray tower Perforated tray tower Bubble cap tower Wetted wall tower Grid tray tower ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Steam distillation is used to separate Heat sensitive materials High boiling substances from nonvolatile impurities Mixtures of low relative volatility Azeotropes Heat sensitive materials High boiling substances from nonvolatile impurities Mixtures of low relative volatility Azeotropes ANSWER DOWNLOAD EXAMIANS APP
EXAMIANS