Mass Transfer The rough value of diffusion co-efficient of water vapor into air at 25°C may be about __________ cm²/sec. 0.0025 2.5 1.25 0.25 0.0025 2.5 1.25 0.25 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer At the same gas flow rate, the pressure drop in a packed tower being irrigated with liquid __________ that in dry packed tower. Is greater than Is same as Is lower than Cannot be predicted as data are insufficient Is greater than Is same as Is lower than Cannot be predicted as data are insufficient ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer In a single stage extraction process, 10 kg of pure solvent S (containing no solute A) is mixed with 30 kg of feed F containing A at a mass fraction xf = 0.2. The mixture splits into an extract phase E and a raf-finate phase R containing A at xB = 0.5 and xR = 0.05 respectively. The total mass of the extract phase is (in Kg) 6.89 8.89 8.25 10 6.89 8.89 8.25 10 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer As the reflux ratio, in a continuous counter-current extraction is increased, the number of stages Remain unchanged Can either increase or decrease, depends on the system Decrease Increase Remain unchanged Can either increase or decrease, depends on the system Decrease Increase ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer 'ADDUCTS' and 'CLATHRATES' are used in case of None of these Extractive distillation Crystallisation Absorption None of these Extractive distillation Crystallisation Absorption ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer When the solvent dissolves very little of solute, then Large quantity of solvent is required to extract the solute Solvent of low freezing point should be used Solvent of low latent heat of vaporisation should be used Very small quantity of solvent is required Large quantity of solvent is required to extract the solute Solvent of low freezing point should be used Solvent of low latent heat of vaporisation should be used Very small quantity of solvent is required ANSWER DOWNLOAD EXAMIANS APP
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