Q. The rough value of diffusion co-efficient of water vapor into air at 25°C may be about __________ cm²/sec.

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Q. NSc/NPr is called the

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Q. McCabe-Thiele method

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Q. The film penetration model of mass transfer was enunciated by

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Q. The most economical range of absorption factor is

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Q. Channelling is most severe

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Q. If the overall efficiency and Murphree plate efficiency are equal, then both the equilibrium and operating lines are

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Q. Which of the following operations does not involve leaching ?

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Q. The recovery of pencillin from the acidified fermentation broth is done by

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Q. Unit operation involved in the prilling of urea is

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Q. Molecular seives are porous

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Q. Calcium ammonium nitrate (a fertiliser) is dried in a __________ dryer.

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Q. A binary mixture of benzene and cyclohexane is separated by

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Q. Component A is diffusing in a medium B. The flux Nᴀ relative to a stationary point is equal to the flux due to molecular difusion, if

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Q. Cox chart is useful in the design of

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Q. Dew point of an air-water vapor mixture

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Q. Which of the following parameters remains almost constant during adiabatic saturation of unsaturated air ?

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Q. Coffee is prepared from coffee beans by leaching with

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Q. Gaseous diffusion co-efficient increases with increase in the

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Q. With increase in absolute humidity, the dew point of an unsaturated mixture of air and water vapor (at constant pressure and temperature)

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