Q. Drying of a wet solid under constant drying conditions means the exposure of the wet solid to the air of constant

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Q. Which of the following provides maximum contact surface for a liquid-vapour system?

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Q. For experimental determination of mass transfer co-efficient by wetted wall tower, the mass transfer area is

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Q. In stripping section of continuous distillation column, the

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Q. In extraction, as the temperature increases, the area of hetrogeneity (area covered by binodal curve)

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Q. Pick out the wrong statement.

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Q. In case of an unsaturated mixture of gas and vapor, the percentage saturation is __________ its relative saturation.

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Q. At constant pressure, with increase of temperature, the dew point will

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Q. For a single component absorber, the operating line is straight only when plotted in term of __________ units.

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Q. Raschig ring made of procelain cannot be used for treating concentrated

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Q. H₂S present in naphtha reformed gas is removed by absorbing with

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Q. During constant rate drying period, vaporisation rate per unit drying surface area

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Q. Pick out the wrong statement.

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Q. In rectifying section of a continuous distillation column, the

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Q. For a distillation column operating at minimum reflux, the

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Q. A solid is being dried in the linear drying rate regime from moisture content Xo to XF. The drying rate is zero at X = 0 and the critical moisture content is the same as the initial moisture Xo. The drying time for M = (Ls/ARc) is (where, L = total mass of dry solid, A = total surface area for drying Rc = Constant maximum drying rate per unit area X = moisture content (in mass of water/mass of dry solids))

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Q. Flash distillation is suitable for the separation of components

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

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Q. Leaching rate is independent of the

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Q. Molality is defined as the number of gm moles of solute per __________ of solvent.

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