Q. __________ column is the most suitable for achieving the best performance for mass transfer operations involving liquid with dispersed solids.

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Q. Deairation (removal of O₂) of water is done by

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Q. Make up water is supplied during cooling tower operation to compensate for water losses due to

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Q. Pick out the wrong statement.

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Q. The Kundsen diffusivity is proportional to (where, T = absolute temperature)

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Q. In case of constant underflow extraction operation, the __________ at all solute concentration.

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Q. In an absorption coloumn, the flooding velocity for random packing is __________ that for stacked/regular packing.

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Q. The relation among various mass transfer co-efficients (M.T.C) for ideal gases is given by (where, Kc & Km are M.T.C. for equimolar counter diffusion with concentration & mole fraction respectively as the driving force. and, Kp = M.T.C. for diffusion of a gas through a stagnant inert gas with pressure as driving force.)

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Q. With increase in temperature, the leaching rate increases because of the

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Q. __________ extractor uses centrifugal force for separating the two phases.

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Q. In a binary distillation column, if the feed contains 40 mole % vapour, the q line will have a slope of

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Q. Pick out the wrong statement.

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Q. Acetic acid will be most economically separated from a dilute solution of acetic acid in water by

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Q. Design calculation for multiple component distillation is done by

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Q. Large scale drying of wheat is done in a __________ dryer.

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Q. Azeotropic distillation is employed to separate

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Q. The drying time between fixed moisture content within diffusion controlled 'falling rate period' is proportional to (assuming that drying occurs from all surfaces of the solid) (where, T = thickness of the solid )

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Q. At the boiling point of the liquid at the prevailing pressure, the saturated absolute humidity becomes

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Q. Use of natural draft cooling tower is practised, when the air has low

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Q. Pressure drop through plate tower as compared to that through packed tower, for the same duty will be

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