Mass Transfer A solid material shows case hardening properties while drying. Which of the following should be controlled to control the drying process? Relative humidity of outlet air Temperature of the solid Flow rate of inlet air Humidity of inlet air Relative humidity of outlet air Temperature of the solid Flow rate of inlet air Humidity of inlet air ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The slope of the operating line for a single component co-current absorber when plotted in terms of mole ratio units is +ve ∞ -ve +ve ∞ -ve ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The Reynolds number of the liquid was increased 100 fold for a laminar falling film used for gas-liquid contacting. Assuming penetrating theory is applicable, the fold increase in the mass transfer co-efficient (Kc) for the same sytem is 5 100 10 1 5 100 10 1 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The temperature to which a vapour gas mixture must be cooled (at varying humidity) to become saturated is called the __________ temperature. Dry bulb None of these Wet bulb Dew point Dry bulb None of these Wet bulb Dew point ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Can the efficiency of a plate in the distillation tower be greater than 100%? Yes ; if the reflux ratio is maximum Normally not; but is possible if infinite number of plates are put Never Yes Yes ; if the reflux ratio is maximum Normally not; but is possible if infinite number of plates are put Never Yes ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer At minimum reflux ratio for a given separation Minimum number of the theoretical plates is required Number of plates is infinity Separation is most efficient Number of plates is zero Minimum number of the theoretical plates is required Number of plates is infinity Separation is most efficient Number of plates is zero ANSWER DOWNLOAD EXAMIANS APP
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