Mass Transfer In a moderately sized packed absorption tower, channeling (which is most severe with stacked packings) can be minimised by taking the ratio of tower diameter to packing diameter > 8:1 > 4 :1 < 8 : 1 < 6:1 > 8:1 > 4 :1 < 8 : 1 < 6:1 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer If the amount of the steam used in steam distillation is increased, the temperature of distillation Increases Decreases Depends on relative volatility Remains unchanged Increases Decreases Depends on relative volatility Remains unchanged ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In a distillation operation, what is the effect of the temperature of the reflux stream (given below) on the condenser and reboiler loads? Reflux conditions:(i) Reflux stream is completely liquid and is at its bubble point.(ii) Reflux stream is below its bubble point. Both condensor and reboiler loads are higher in case (ii) as compared to case (i) Condenser load is the same in both the cases but reboiler load is higher in case (ii) Reboiler load is the same in both the cases but condenser load is higher in case (ii) Condenser and reboiler loads are the same in both the cases Both condensor and reboiler loads are higher in case (ii) as compared to case (i) Condenser load is the same in both the cases but reboiler load is higher in case (ii) Reboiler load is the same in both the cases but condenser load is higher in case (ii) Condenser and reboiler loads are the same in both the cases ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer During bottling of cold drinks (e.g. Pepsi), the main resistance to mass transfer for the absorption of carbon dioxide in water lies in the None of these Gas film Liquid-gas interface Liquid film None of these Gas film Liquid-gas interface Liquid film ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Heat load in a cooling tower Neither A nor B Both A & B Means the amount of heat thrown away (KCal/hr.) by the cooling tower Is equal to the number of kg, of water circulated times the cooling range Neither A nor B Both A & B Means the amount of heat thrown away (KCal/hr.) by the cooling tower Is equal to the number of kg, of water circulated times the cooling range ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer During constant rate drying period, vaporisation rate per unit drying surface area Increases with time Decreases with time Does not affect the moisture content of the wet solid Does not change with time Increases with time Decreases with time Does not affect the moisture content of the wet solid Does not change with time ANSWER DOWNLOAD EXAMIANS APP
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