Mass Transfer The value of Lewis number (Le = Sc/Pr) for air-water vapour system is around 3.97 0.24 1 600 3.97 0.24 1 600 ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following is an undesirable characteristic for the solvent used in gas absorption? Low vapor pressure None of these Low viscosity High gas solubility Low vapor pressure None of these Low viscosity High gas solubility ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Which of the following is not fixed by the process requirements, in the design of absorbers? Flow rate of the entering gas Terminal concentrations of gas stream Composition of the entering liquid None of these Flow rate of the entering gas Terminal concentrations of gas stream Composition of the entering liquid None of these ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Solvent used in extractive distillation Does not alter the relative volatility of the original components Forms a low boiling azeotrope Forms a high boiling azeotrope Is of low volatility Does not alter the relative volatility of the original components Forms a low boiling azeotrope Forms a high boiling azeotrope Is of low volatility ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer Though, theoretically the adsorption & desorption isotherms is expected to coincide but sometimes at least a part of the isotherms does not coincide and this phenomenon is known as adsorption hysterisis. In such cases, the desorption equilibrium pressure is __________ that obtained for adsorption. Either same or higher than Higher than Lower than Same as Either same or higher than Higher than Lower than Same as ANSWER DOWNLOAD EXAMIANS APP
Mass Transfer A coalescer in a mixer-settler liquid-liquid extraction coloumn Helps in increasing the settling rate of the bubbles Comprises of thin bed of substances of extended surface having high porosity Helps in increasing the bubble size entering the settler All of these Helps in increasing the settling rate of the bubbles Comprises of thin bed of substances of extended surface having high porosity Helps in increasing the bubble size entering the settler All of these ANSWER DOWNLOAD EXAMIANS APP
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