38901. For high pressure process equipments/vessels, the connected nozzle should be
38902. Smoker's equation for the calculation of number of equilibrium stages in a continuous binary distillation column is used, when the
38903. Column support for the roof of cylindrical storage tank must be provided for
38904. For a cylinderical internally pressurised vessel, which of the following closure types would withstand highest pressure, if each closure is of the same material and thickness ?
38905. In inclined long tube vertical evaporators, the tubes are inclined at an angle of
38906. In a continuous distillation column, the optimum reflux ratio ranges from __________ times the minimum reflux ratio.
38907. The wall thickness for a large high pressure pipeline is determined by the consideration of the
38908. In the case of a shell and tube heat exchanger, the logarithmic mean temperature difference
38909. Skirt support is the most suitable for supporting __________ vessels.
38910. Baffles may be eliminated for
38911. Generally, as the length of the liquid path on a tray is increased beyond 5 ft, the overall column efficiency
38912. In packed absorption tower, onset of flooding usually occurs at a pressure drop of about __________ mm of water column per metre height of packing.
38913. For pipe flows, head is proportional to __________ at constant capacity (where D = pipe diameter ).
38914. Friction factor for turbulent flow in a new pipe is given by
38915. The minimum tray spacing in distillation column of diameter less than 3 ft is normally __________ inches.
38916. Oxygen carrying pipelines in chemical industries are coloured with __________ colour.
38917. Normally, the ratio of the total riser area to the tower cross sectional area (for bubble cap towers of diameter more than 3 ft) is around
38918. Pick out the wrong statement about the design of seive plate column and the bubble cap column.
38919. Maximum size of the raschig rings used in a packed tower is about __________ of the coloumn diameter.
38920. The type of stress developed in a metallic bar on subjecting it to a change in temperature without allowing it to be deformed is __________ stress.
38921. The safe distance of habitation from a hazardous chemical plant (TLV of its product < 1000 ppm) should be about __________ kms.
38922. Pick out the wrong statement pertaining to a shell and tube heat exchanger.
38923. Corrosion allowance in the design of pressure vessel/chemical equipment is not necessary, if
38924. Maximum allowable vapour velocity in a bubble cap tower is determined by the
38925. Normally, the plate thickness of the bottoms and roofs of vertically cylindrical storage vessels as compared to that of the cylindrical shell is
38926. The practical representative values of HETP for a number of commercial operations lies within a range of __________ metre.
38927. Of the pressure vessels, with same thickness but different diameters, which one withstands higher pressure ?
38928. Reflux ratio variation in a distillation column is between
38929. In condenser, the cooling water is passed in the tube side in a pass arrangement, because
38930. In packed towers provided with pall rings liquid redistributors are positioned at heights of every 6 metres or 5-10 times the column diameter, whichever is less. Maximum size of the pall rings should not exceed __________ of the column diameter.
38931. Height of the flights in the rotary drier is in the range of
38932. Vapor velocity in a distillation column for non-foaming mixture is in the range of __________ times the flooding velocity.
38933. Cylindrical storage tanks used for the storage of volatile liquids (e.g., naphtha) have __________ roofs.
38934. Larger depth of liquid on the trays of a distillation column
38935. Who is known as ‘Mellisai Mannan’?
38936. Christopher Lee is associated with
38937. In the downcomer of a distillation column, the minimum recommended residence time is about __________ seconds.
38938. For identical situation, condensing film coefficient in case of a horizontal condenser is almost __________ the value expected in case of vertical condenser.
38939. Diameter of rivet hole (d, mm) and the plate thickness (t, mm) are related by Unwin's formula as
38940. A binary liquid azeotropic mixture has boiling point lower than either of the components, when it shows __________ deviation from Raoult's Law.
38941. In which of the following evaporators, steam is fed inside the tube while the liquor is outside the tube ?
38942. Who started CMS Press in 1821?
38943. In a multipass shell and tube heat exchanger, the baffles on shell side is primarily provided for
38944. For turbine agitator, the impeller diameter is about
38945. If a single tube pass heat exchanger is converted to two passes; for the same flow rate, the pressure drop per unit length in tube side will __________ times.
38946. The First Keralite who had participated with the activities of Indian National Congress was:
38947. Pick out the wrong statement pertaining to the design of a long tube vertical evaporator.
38948. Which of the following is the most common type of baffle used in industrial shell and tube heat exchanger ?
38949. What is the minimum recommended ligament for square pitch arrangement in case of heat exchangers ?
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