Q. Cox chart, which is useful in the design of distillation column particularly for petroleum hydrocarbons, is a plot of (where, P = vapor pressure, T = temperature)

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Q. The unit of volumetric diffusivity is

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Q. For a ternery mixture, in which equilateral triangular co-ordinate is used in leaching and extraction, a __________ of the equilateral triangular co-ordinates.

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Q. Steady state temperature reached by a small amount of liquid evaporating into a large amount of unsaturated vapour-gas mixture is called the __________ temperature.

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Q. The Reynolds number of the liquid was increased 100 fold for a laminar falling film used for gas-liquid contacting. Assuming penetrating theory is applicable, the fold increase in the mass transfer co-efficient (Kc) for the same sytem is

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Q. The slope of 9-line is determined by the

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Q. In steam distillation, the

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Q. Which of the following can be calculated theoretically using steam table and Dalton's law of partial pressure; if the relative humidity and dry bulb temperature of moist air is known ?

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Q. Which of the following parameters remains constant during chemical dehumidifica-tion?

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Q. Drying of a solid involves __________ transfer.

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Q. Mechanism of moisture removal in case of freeze drying of food stuff is by

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Q. The dew point of an unsaturated gas-vapor mixture does not depend upon the __________ of the mixture.

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Q. Which is not concerned directly with mass transfer ?

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Q. In case of cooling towers, the ratio of the rates of heat and mass transfer is indicated by the __________ number.

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Q. Which one of the following devices is not used for both the absorption as well as the liquid-liquid extraction processes ?

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Q. The temperature of water cooled in cooling tower is always __________ temperature of entering air.

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Q. Which of the following processes is followed by unsaturated air (with dry bulb temperature 12°C and relative humidity 47%) passing through water spray washer (temperature of water being constant at 40°C?

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Q. Mass transfer co-efficient is directly proportional to Dᴀʙ according to the __________ theory.

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Q. Ammonia present in the coke oven gas is removed by washing with

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Q. With increase in temperature, the leaching rate increases due to

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