Mass Transfer To get high tray efficiency 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 Gas velocity should be very low ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Gaseous diffusivity at atmospheric pressure is of the order of __________ cm²/second. > 10 1 5 to 10 1 to 5 > 10 1 5 to 10 1 to 5 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The relative saturation of an unsaturated mixture of gas and vapor is independent of the Temperature of the mixture None of these Composition of the mixture Nature of the vapor Temperature of the mixture None of these Composition of the mixture Nature of the vapor 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 Depend on saturated boiling point; may increase or decrease Decrease Remains same Increase Depend on saturated boiling point; may increase or decrease Decrease Remains same Increase ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Overall efficiency of the distillation column is Always more than the point efficiency The ratio of number of ideal plates to actual plates Same as the Murphree efficiency The ratio of number of actual plates to ideal plates Always more than the point efficiency The ratio of number of ideal plates to actual plates Same as the Murphree efficiency The ratio of number of actual plates to ideal plates ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Steam distillation is used for separation of high boiling Both of the options given here Volatile impurity from still higher boiling substances Substances from non-volatile impurities none of the listed here Both of the options given here Volatile impurity from still higher boiling substances Substances from non-volatile impurities none of the listed here ANSWER DOWNLOAD EXAMIANS APP
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