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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Q. The amount of steam required per unit quantity of distillate in case of steam distillation will be reduced by

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Q. The difference of wet bulb temperature and adiabatic saturation temperature of unsaturated mixture of any system is

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Q. Fenske's equation for determining the minimum number of theoretical stages in distillation column holds good, when the

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Q. When the temperature and humidity of air is low, we usually use __________ draft cooling tower.

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Q. Make up water is required in a cooling tower to replace the water lost by

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Q. Which of the following quantities need not be fixed before starting the design of a co-current absorber ?

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Q. Mass transfer co-efficient of liquid is

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Q. Absorption accompanied with chemical reaction is exemplified by the absorption of

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Q. Which of the following unit operations makes use of Thiele-Geddes equation ?

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Q. As the reflux ratio in a distillation coloumn is increased from the minimum, the

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Q. Absorption factor is defined as (where, S1 = slope of the operating line S2 = slope of the equilibrium curve)

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Q. A plait point is the point on the solubility curve, where the tie line reduces to a point. What is the number of plait point for a ternery system containing two pairs of partially miscible liquids ?

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