Mass Transfer During constant rate drying period, vaporisation rate per unit drying surface area Decreases with time Does not change with time Increases with time Does not affect the moisture content of the wet solid Decreases with time Does not change with time Increases with time Does not affect the moisture content of the wet solid ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Flights in a rotary dryer are provided to Reduce the residence time of solid Increase the residence time of the solid None of these Lift and shower the solids thus exposing it thoroughly to the drying action of the gas Reduce the residence time of solid Increase the residence time of the solid None of these Lift and shower the solids thus exposing it thoroughly to the drying action of the gas ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Extraction of coffee from its seed is done by Extractive distillation Steam distillation Leaching Liquid-liquid extraction Extractive distillation Steam distillation Leaching Liquid-liquid extraction ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following liquid-vapor contacting devices provides maximum contact surface area for a particular duty? Randomly packed column Sieve plate column Wetted wall column Bubble cap column Randomly packed column Sieve plate column Wetted wall column Bubble cap column ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer At what value of reflux ratio, number of theoretical plates in a distillation column is minimum? ∞ 1 < 1 ∞ 1 < 1 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Binary distillation involves the mass transfer by __________ at the gas-liquid interface. Unidirectional diffusion from liquid to gas phase A counter diffusion at an almost equal molar rate Either A or B Unidirectional diffusion from gas to liquid phase Unidirectional diffusion from liquid to gas phase A counter diffusion at an almost equal molar rate Either A or B Unidirectional diffusion from gas to liquid phase ANSWER DOWNLOAD EXAMIANS APP
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