Q. The binary diffusivity in gases and liquids vary respectively as

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Q. Pick out the correct statement.

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Q. Pick out the correct statement.

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Q. The McCabe Δ L law states that the

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Q. Bollman extractor

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Q. The relation, Sc = Pr = 1, is valid, when the mechanism of __________ ansfer is same.

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Q. A coalescer in a mixer-settler liquid-liquid extraction coloumn

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Q. For the same feed, feed quality and separation (in a distillation column), with the increase of total pressure, the number of ideal plates will

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Q. Corresponding to Nusselt number in heat transfer, the dimensionless group in mass transfer is the __________ number.

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Q. If the specific heats of a gas and a vapor are 0.2KJ/Kg.°K and 1.5 KJ/Kg.°K respectively, and the humidity is 0.01; the humid heat in KJ/°Kg. is

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Q. Liquid diffusivity is of the order of __________ cm² /second.

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Q. The solvent used in liquid extraction should not have high latent heat of vaporisation, because

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Q. At the same gas flow rate, the pressure drop in a packed tower being irrigated with liquid __________ that in dry packed tower.

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Q. Pick out the correct statement.

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Q. When the liquid phase and vapour phase of a binary system obeys Raoult's and Dalton's law respectively, the relative volatility is the ratio of

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Q. The operation involved when the soluble material is largely on the surface of an insoluble solid and is merely washed off by the solvent is called

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Q. In the constant rate period of the rate of drying curve for batch drying,

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Q. It takes 6 hours to dry a wet solid from 50% moisture content to the critical moisture content of 15%. How much longer it will take to dry the solid to 10% moisture content, under the same drying conditions? (The equilibrium moisture content of the solid is 5%).

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Q. The binary diffusivity in gases at atmospheric conditions is about

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Q. Percentage saturation is __________ the relative saturation.

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