Q. Molecular diffusivity of a liquid

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Q. The wet and dry bulb temperature for a vapour-gas mixture are 25°C and 30°C respectively. If the mixture is heated to 45°C at constant pressure, the wet bulb temperature will be __________ °C.

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Q. Henry's law states that the

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Q. The relative volatility of a binary mixture at constant temperature __________ the total pressure.

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Q. Tower diameter may be decreased by

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Q. Rayleigh's equation applies to __________ distillation.

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Q. Steady state equimolal counter diffusion is encountered in

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Q. Which of the following is considered equivalent to one theoretical stage in Mc-Cabe Thiele's method ?

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Q. Removal of __________ exemplifies an adsorption unit operation.

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Q. Can the efficiency of a plate in the distillation tower be greater than 100% ?

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Q. With increase in the mass velocity of the gas, the rate of drying during the constant rate period __________ , if the conduction and radiation through the solid are negligible.

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Q. For gas absorption, low viscosity solvents are preferred, because of their

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Q. To remove all the moisture from a wet solid it requires exposure to __________ air.

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Q. Polar organic compounds are normally used as separating agents for the azeotropic and extractive distillation. Which of the following is the most important factor to be considered for the choice of the separating agent for extractive distillation ?

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Q. As the reflux ratio increases, the slope of the operating line for rectifying section

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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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