Q. The reason for preferring packed towers over plate towers in distillation practice is that the packed tower operation gives

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Q. If the path of liquid across the plate is very long as in case of large diameter tower, Murphree efficiency can be __________ percent.

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Q. Compound A is extracted from a solution of A + B into a pure solvent S. A Co-current unit is used for the liquid-liquid extraction. The inlet rate of the solution containing A is 200 moles of B/hr.m² and the solvent flow, rate is 400 moles of S/m². hr. The equilibrium data is represented by Y = 3X² , where Y is in moles of a A/moles of B and X is in moles A/moles of S. The maximum percentage extraction achieved in the unit is

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Q. Raoult's law is applicable to the

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Q. Weeping in a distillation column

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Q. Agitator is provided in a crystalliser for

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Q. __________ diffusion is used for separating the isotopes of methane.

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Q. Ordinary diffusion process is also called __________ diffusion.

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Q. Pick out the wrong statement.

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Q. Pick out the wrong statement pertaining to the rotary dryer.

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Q. Pick out the correct statement.

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Q. Very tall packed towers are divided into series of beds to

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Q. Moisture contained by a substance in excess of the equilibrium moisture is called the __________ moisture.

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Q. With increase in temperature, the solubility of gases in liquids, at fixed pressure

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Q. In most of the vacuum crystalliser, vacuum is generally produced by means of a

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Q. In case of binary distillation, increasing the reflux ratio above optimum does not result in the increase of

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Q. Wetted wall tower experiment determines the

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Q. In McCabe-Thiele method, at infinite reflux ratio

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Q. With decrease in the throughput (compared with the design capacity) for a bubble cap distillation column, its efficiency

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Q. Plate towers are preferred to packed towers, when large temperature changes are involved, because of the reason that the

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