Q. In extractive distillation, solvent is

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Q. Which of these columns incurs the lowest pressure drop ?

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Q. In the desorption of highly soluble gas from the liquid, the main resistance will be in the __________ phase.

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Q. 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

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Q. Which of the following remains constant during evaporative cooling process with recirculated water supply ?

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Q. For stripping of a gas in a counter current stripper, the operating line

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Q. Diameter of raschig rings used in packed tower in industry is normally around __________ inches.

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Q. The diffusion co-efficient in m² /s. of acetic acid in benzene (liquid in liquid) is

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Q. Pick out the wrong statement.

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Q. In case of non-ideal gases and liquids, the molal diffusivity

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Q. Condensation of a vapour-gas mixture just begins, when (where, p = partial pressure of the vapour P = vapour pressure of the liquid )

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Q. Humid volume is the total volume in m³ of 1 kg of

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Q. Diameter to height ratio for a rashig ring is

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Q. The equipment used in the extraction of highly corrosive radio active liquids is

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Q. Advantage of continuous drying over batch drying is that the

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Q. With increase in temperature, the rate of extraction in leaching (solid-liquid extraction system)

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Q. In a packed bed absorption column, the channelling will be noted by the

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Q. Gaseous diffusivity at atmospheric pressure is of the order of __________ cm²/second.

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Q. In liquid-liquid extraction, the number of phases at plait point is

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Q. In a liquid-liquid extraction, 10 kg of a solution containing 2 kg of solute C and 8 kg of solvent A is brought into contact with 10 kg of solvent B. Solvent A and B are completely immiscible in each other whereas solute C is soluble in both the solvents. The extraction process attains equilibrium. The equilibrium relationship between the two phases is Y* = 0.9X, where Y* is the kg of C/kg of B and X is kg of C/kg of A. Choose the correct answer.

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