Mass Transfer Which of these columns incurs the lowest pressure drop? Pulse column Bubble plate column Packed column (with stacked packing) Packed column (with dumped packing) Pulse column Bubble plate column Packed column (with stacked packing) Packed column (with dumped packing) ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer The temperature of water cooled in cooling tower is always __________ temperature of entering air. Equal to the dry bulb Less than the wet bulb More than the wet bulb Equal to the wet bulb Equal to the dry bulb Less than the wet bulb More than the wet bulb Equal to the wet bulb ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer H₂S is being absorbed in a gas absorber unit. The height of the transfer unit based on the overall mass transfer coefficient on the gas side is 0.4 m. The equilibrium data is given by, y = 1.5 x. The bulk concentration of H₂S has to be reduced from 0.05 to 0.001 mole fraction in the gas side. The height of the tower (in metres) corresponding to an operating line given by, y = 5x + 0.001 is 1.56 2 0.56 1 1.56 2 0.56 1 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Equilibrium moisture of a solid is equal to the total moisture minus free moisture. Which of the following substances will have maxi-mum equilibrium moisture? Bamboo Inorganic solids Anthracite coal Rag paper Bamboo Inorganic solids Anthracite coal Rag paper ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In liquid extraction, if the selectivity is unity, then Separation of the constituents is the most effective Solvent flow rate should be very low No separation will occur Amount of solvent required will be minimum Separation of the constituents is the most effective Solvent flow rate should be very low No separation will occur Amount of solvent required will be minimum ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer If G = insoluble gas in gas stream and L = non-volatile solvent in liquid stream, then the slope of the operating line for the absorber is Always < 1 None of these G/L L/G Always < 1 None of these G/L L/G ANSWER DOWNLOAD EXAMIANS APP
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