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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Q. Mass transfer co-efficient is directly proportional to Dᴀʙ^0.5, according to __________ theory.

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Q. Sand is dried in foundaries in a___drier.

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Q. Which of the following employs an accessory known as 'drift eliminator' ?

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Q. Pick out the correct statement.

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Q. Pick out the correct statement.

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Q. At a given equilibrium pressure, with increase in temperature, the concentration of adsorbed gas on solid adsorbant

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Q. Which of the following adsorbent is used to decolourise yellow glycerine ?

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Q. In a distillation column, with increase in the reflux ratio, the heat removed in the cooler

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Q. Pick out the wrong statement.

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Q. If Rm is the minimum reflux ratio, the optimum reflux ratio may be around __________ Rm.

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Q. During dehumidification of unsaturated air wet bulb temperature & partial pressure of vapor are not constant. However, during evaporative cooling process with recirculated water supply, the __________ remains constant.

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Q. In case of absorption, both the operating and equilibrium lines will be straight for

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Q. Mass transfer co-efficient varies as Dᴀʙ^0.5, according to the __________ theory.

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Q. For an absorber, both equilibrium and operating line will be straight for

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Q. Unsaturated air (with dry bulb and wet bulb temperatures being 45°C and 25°C respectively) is passed through a water spray chamber maintained at 23°C. The air will be cooled and

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Q. Humid volume, at a given temperature is a/an __________ function of humidity.

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