Q. Flooding in a vapor-liquid contacting equipment occurs in a tray, when the pressure drop through a tray is __________ the liquid head available in the downcomer.

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Q. Milk is dried usually in a __________ dryer.

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Q. High pressure at the bottom of a distillation tower handling heat sensitive materials results in

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Q. Alcohol is dehydrated using __________ distillation.

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Q. Separation of two volatile liquids by distillation makes use of their

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

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Q. Dried finished product sampled from various parts of a __________ dryer exhibits non-uniformity in the moisture content.

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Q. At a fixed pressure, the humidity depends upon the partial pressure of vapor in the mixture. Humidity of a vapour free gas is __________ percent.

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Q. In case of physical adsorption, the difference between heat of adsorption and heat of normal condensation is

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Q. Pick out the wrong statement:

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Q. The value of L/mG ratio for economical absorption operation ranges from

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Q. Large scale usage of flash distillation is practised in

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Q. Which of the following is not a continuous leaching equipment ?

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Q. __________ extractor is used for the concentration of radioactive nuclear waste.

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Q. Moisture content of a substance when at equilibrium with a given partial pressure of the vapour is called the __________ moisture.

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Q. All moisture in a non-hygroscopic material is the __________ moisture.

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Q. Pick out the correct relationship. (where, Ri = internal reflux ratio Ro = external reflux ratio. )

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Q. Separation of __________ employs gaseous diffusion process.

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Q. For water-ethanol system, the minimum reflux ratio

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Q. The interfacial area per unit volume of dispersion, in a gas-liquid contactor, for fractional hold up of gas = 0.1 and gas bubble diameter = 0.5 mm is given by (in m²/m³)

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