Q. The drying time between fixed moisture contents within the 'constant rate period' is proportional to (assuming that drying occurs from all surfaces of the solid) (where, T = thickness of the solid )

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Q. __________ equation applies to diffusivities in liquids.

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Q. Hydrogenation of oil is carried out in a/an __________ in Vanaspati manufacturing plant.

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Q. Sides of equilateral-triangular co-ordinates (on which ternary liquid system is plotted) represent

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Q. In distillation column design, the McCabe-Thiele procedure is inadequate and a Ponchan-Savarit procedure is needed, when

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Q. In an interphase mass transfer process, the lesser the solubility of a given solute in a liquid, the higher are the chances that the transfer process will be

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Q. As the reflux ratio decreases, the

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Q. Humidification involves mass transfer between a pure liquid phase and a fixed gas, which is

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Q. __________ is the temperature at which a gas-vapor mixture becomes saturated, when cooled at constant total pressure out of contact with a liquid.

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Q. Rate of leaching increases with increasing

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Q. An azeotropic mixture is a __________ mixture.

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Q. Pick out the wrong statement.

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Q. Molecular seives are regenerated by heating to __________ °C.

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Q. In a counter-current extractor, as the axial mixing increases, the extraction efficiency

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Q. Heat sensitive materials like certain pharmaceuticals and food stuffs can be dried in a/an __________ dryer.

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Q. In extractive distillation, solvent is

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Q. Which of these columns incurs the lowest pressure drop ?

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Q. In the desorption of highly soluble gas from the liquid, the main resistance will be in the __________ phase.

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Q. If G = insoluble gas in gas stream and L = non-volatile solvent in liquid stream, then the slope of the operating line for the absorber is

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Q. Which of the following remains constant during evaporative cooling process with recirculated water supply ?

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