Q. In batch distillation with constant reflux, overhead product composition __________ with time.

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Q. Psychrometry deals with the properties of gas-vapor mixture. Humidity can be determined by the measurement of the __________ of a fibre.

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Q. Heat in BTU necessary to increase the temperature of 1 lb of gas and its accompanying vapour by 1°F is called the

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Q. To increase the absorption factor, (where, G = gas flow rate, S = solvent flow rate)

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Q. In distillation columns, the number of bubble caps per tray primarily depends upon the

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Q. In distillation, overhead product contains

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Q. With increase in pressure, the relative volatility for a binary system

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Q. Low viscosity absorbent is preferred for reasons of

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Q. Mass transfer co-efficient (K) and diffusivity (D) are related according to film theory as

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Q. Drying operation under vacuum is carried out to

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Q. Air initially at 101. 3 kPa and 40°C and with a relative humidity of 50%, is cooled at constant pressure to 30°C. The cooled air has a

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Q. Separation of two or more components of a liquid solution can not be achieved by

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Q. Stefan's law describes the mass transfer by

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Q. At minimum reflux ratio for a given separation

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Q. The mass diffusivity, the thermal diffusivity and the eddy momentum diffusivity are same for, NPr = NSc = __________

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Q. Dew point of a gas-vapour mixture

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Q. In a packed absorption tower, if the equilibrium and operating lines are both straight lines, then the ratio, HETP/HTUOG __________ the absorption factor.

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Q. Which of the following plays an important role in problems of simultaneous heat and mass transfer ?

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Q. In case of an absorber, the operating

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Q. Total reflux in a distillation operation requires minimum

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