Mass Transfer In a distillation column, with increase in the reflux ratio, the heat removed in the cooler Increases Remains unaffected Decreases And the heat required in reboiler decreases Increases Remains unaffected Decreases And the heat required in reboiler decreases ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Diffusivity in concentrated solutions differs from that in dilute solutions, because of the changes in Neither A nor B Viscosity with concentration Degree of ideality of the solution Both A & B Neither A nor B Viscosity with concentration Degree of ideality of the solution Both A & B ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer To get high tray efficiency 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 Liquid entrainment should be severe Interfacial surface between liquid and gas phase should be large ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The main reason for dividing a tall packed tower into series of small towers is to Minimise the overall pressure drop Reduce liquid hold up Avoid flooding Avoid channeling Minimise the overall pressure drop Reduce liquid hold up Avoid flooding Avoid channeling ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The velocity, concentration and temperature boundary, for the boundary layer development on a flat plate during connective mass transfer will be same, if NSc = NLe NSc = NPr = NLe NPr = NLe NSc = 1 NSc = NLe NSc = NPr = NLe NPr = NLe NSc = 1 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer During the constant rate period of drying of a solid, Surface evaporation of unbound moisture occurs Increased air humidity decreases the rate of drying None of these Increasing the air temperature decreases the drying rate Surface evaporation of unbound moisture occurs Increased air humidity decreases the rate of drying None of these Increasing the air temperature decreases the drying rate ANSWER DOWNLOAD EXAMIANS APP
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