Q. With increase in the reflux ratio for a fixed production from a continuous binary distillation column, the __________ decreases.

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Q. The slope of operating line in the rectifying section of a distillation column is unity, if the reflux ratio is

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Q. Thickness of the frame of a plate and frame filter as compared to that of plates is

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Q. Which of the following factors affect the pressure drop in a co-current gas-liquid absorption packed tower ?

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Q. The thickness of heat transfer plates used in the plate type heat exchanger ranges from __________ mm, pressed in a single piece provided with grooves & corrugations.

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Q. Rivets are generally specified by the

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Q. Length to diameter ratio of most rotary driers is in the range of

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Q. Vertical vessels are not supported by

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Q. With increase in pressure drop (for a given particle size), the dust collection efficiency of a cyclone separator will

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Q. Spherical shaped pressure vessel is considered to be the most ideal, because it can

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Q. An adequate clearance between the tray and the shell wall of a distillation column is provided to

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Q. Overall tray efficiency of a distillation column is the ratio of the number of

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Q. Number of evaporators which can be used in service in a multiple effect evaporation system is limited by the

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Q. Which of the following is used to set the diameter of the distillation column ?

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Q. Ponchon Savarit method is based on the use of enthalpy concentration diagram, which contains the bubble point curve (saturated liquid curve), dew point curve (saturated vapour curve) and equilibrium tie lines. As compared to McCabe-Thiele's method, this method

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Q. The optimum size ratio for two mixed reactors in series depends on the kinetics of the reaction and the conversion level. For reaction orders more than one, the

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Q. In a shell and tube heat exchanger, tube side __________ of the mass velocity.

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Q. Cooling water fouling factors vary in the range of 0.001 to 0.003

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Q. Minimum recommended baffle spacing in a shell and tube heat exchanger is about (where, D = shell diameter )

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Q. The maximum liquid gradient over a tray must not exceed

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