A distillation column with N plates is being operated under normal conditions. At some point of time, the operation is shifted to total reflux condition (i.e., no product and residue are being withdrawn and feed to the column is stopped). At the new steady state ?

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The relative volatility of a binary mixture at constant temperature _________________ the total pressure?

A. Decreases with increase in B. Increases with increase in C. Is independent of D. None of these...

Pick out the wrong statement ?

A. Absorption factor is constant, when the equilibrium and operating lines are straight B. In case of a stripper, the equilibrium curve is always below the operating line C. In case of an absorber, the operating line is always above the equilibrium curve D. In the absorption of low solubility gases, the liquid film is … Pick out the wrong statement ?Read More...

In most of the mechanically agitated liquid-liquid extractors, baffles or horizontal compartmental plates are provided, which helps in_________________?

A. Reducing the axial mixing B. Increasing the rate of extraction C. Maintaining the concentration difference between the two phases D. All A , B & C....

Design calculation for multiple component distillation is done by_________________?

A. Ponchon-Savarit method B. McCabe-Thiele method C. Enthalpy concentration method D. Tray to tray calculations...

For ethanol-water system, the lowering of distillate quality from 95% to 92% will cause ____________________ plate requirement?

A. No change in theoretical B. Marginal decrease in the number of C. Major decrease in the number of D. None of these...