Q621
Open questionPick out the wrong statement.
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Chemical Engineering · all questionsMass Transfer
Mass Transfer
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Q622
Open questionAt equilibrium the concentration of water in vapour phase (C*) in kg/m3 of air space and the amount of water (m) adsorbed per kg of dry silica gel are related by, C* = 0.0667 m. To maintain dry conditions in a room of air space 100 m3 containing 2.2 kg of water vapour initially, 10 kg of dry silica gel is kept in the room. The fraction of initial water remaining in the air space after a long time (during which the temperature is maintained constant) is
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Q623
Open questionIn a forced draft cooling tower, water is cooled from 95 to 80°F by exposure to air with a wet bulb temperature of 70°F. In this case, the
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Q624
Open questionDuring sensible cooling process
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Q625
Open questionWhich of these columns incurs the lowest pressure drop?
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Q626
Open questionRaschig ring made of procelain cannot be used for treating concentrated
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Q627
Open questionAlcohol is dehydrated using __________ distillation.
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Q628
Open questionRose oil is extracted from rose leaves using __________ distillation.
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Q629
Open questionComponents, having widely different boiling point in a binary mixture, can be separated using __________ distillation.
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Q630
Open questionThe dimension of diffusivity is same as that of the
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Q631
Open questionDimension of mass diffusivity is the same as that of
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Q632
Open questionMilk is dried usually in a __________ dryer.
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Q633
Open questionMolarity is defined as the number of gm moles of solute per __________ of solvent.
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Q634
Open questionMolality is defined as the number of gm moles of solute per __________ of solvent.
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Q635
Open questionDeairation (removal of O2) of water is done by
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Q636
Open questionHydrogenation of oil is carried out in a/an __________ in Vanaspati manufacturing plant.
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Q637
Open questionThe adiabatic saturation curve for a vapour-gas mixture is
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Q638
Open questionRadioactive nuclear waste is treated in
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Q639
Open questionUnit operation involved in the prilling of urea is
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Q640
Open questionDanckwerts developed the __________ theory.
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