Q. (NSh/NRe.NSc) is termed in mass transfer operation as the

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Q. In a binary system, separation is very efficient, when the relative volatility is

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Q. Fenske-Underwood equation used for calculating the minimum number of theoretical plates in distillation column is valid for

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Q. The binary diffusivity in gases does not depend upon the

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Q. Berl saddle made of carbon cannot be used for

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Q. 1 kg of a saturated aqueous solution of a highly soluble component A at 60°C is cooled to 25°C. The solubility limits of A are (0.6 kgA/kg water) at 60°C and (0.2 kgA/kg water) at 25°C. The amount in kg of the crystals formed is

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Q. Pick out the wrong statement. Raoult's law does not apply, when the

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Q. Water-ethyl alcohal solution can be concentrated (in respect of alcohal concentration) by __________ distillation.

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Q. L/mG is the expression for

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Q. Extraction of pencillin employs a __________ extraction coloumn.

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Q. In case of gases, the binary diffusivity is proportional to (where, P = pressure)

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Q. As per Gilliland's equation, the diffusivity is

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Q. Pick out the wrong statement.

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Q. A mixture of 10% C₆H₆ vapour in air at 25°C and 750 mm Hg has a dew point of 20°C. Its dew point at 30°C and 700 mm Hg will be around __________ °C.

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Q. Which of the following is not fixed by the process requirements, in the design of absorbers ?

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Q. If the amount of the steam used in steam distillation is increased, the temperature of distillation

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Q. The Hatta number is important in

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Q. When a multistage tray tower uses a minimum reflux ratio, it implies

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Q. CO₂ can be absorbed by

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Q. For the same process conditions, the reflux ratio of an unlagged distillation column

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