Mass Transfer To get high tray efficiency Gas velocity should be very low Liquid entrainment should be severe Interfacial surface between liquid and gas phase should be large Time of contact between the two phases should be less Gas velocity should be very low Liquid entrainment should be severe Interfacial surface between liquid and gas phase should be large Time of contact between the two phases should be less ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Steam distillation is used for separation of high boiling none of the listed here Volatile impurity from still higher boiling substances Substances from non-volatile impurities Both of the options given here none of the listed here Volatile impurity from still higher boiling substances Substances from non-volatile impurities Both of the options given here ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The feed to fractionating column is changed from saturated vapour to saturated liquid. If the separation and reflux ratio remains unchanged, the number of ideal stages will Increase Decrease Remains same Depend on saturated boiling point; may increase or decrease Increase Decrease Remains same Depend on saturated boiling point; may increase or decrease ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In case of gases, the binary diffusivity is proportional to (where, P = pressure) √P P 1/√P 1/P √P P 1/√P 1/P ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following processes is followed by unsaturated air (with dry bulb temperature 12°C and relative humidity 47%) passing through water spray washer (temperature of water being constant at 40°C? Evaporative cooling Humidification only Both heating and humidification Heating only Evaporative cooling Humidification only Both heating and humidification Heating only ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Liquid diffusivity is of the order of __________ cm² /second. 10-5 to 10-6 0.01 0.1 > 1 10-5 to 10-6 0.01 0.1 > 1 ANSWER DOWNLOAD EXAMIANS APP
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