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1-Dont try to cram or spend more time here just read it fast and cover syllabus then practice MCQ's cheptor of same topic to check your progress. . |
2-Wrong options are also given but dont concentrate there, Right answer is in bold format. |
Q1 ⇒ Fresh water carrying pipelines in chemical industries are coloured with __________ color. sea green [other wrong options] [Discuss in forum] ![]() ![]() brown yellow red |
Q2 ⇒ Lug support is all (a), (b) and (c). [other wrong options] [Discuss in forum] ![]() ![]() the most suitable for thick vertical vessel. same as bracket support. provided usually for vessels of much smaller height than skirt supported vessels. |
Q3 ⇒ In case of bubble cap distillation column of diameter greater than 1.2 metres, the cap diameter is roughly about __________ cms. 10 [other wrong options] [Discuss in forum] ![]() ![]() 20 30 35 |
Q4 ⇒ In a multipass shell and tube heat exchanger, the shell side cross flow area does not depend upon none of these [other wrong options] [Discuss in forum] ![]() ![]() baffle spacing clearance pitch |
Q5 ⇒ The operating velocity in the absorption tower is usually 40-50% of the flooding velocity. Packed absorption towers are normally designed for a pressure drop of about __________ mm of water column per metre height of packing. 20-40 [other wrong options] [Discuss in forum] ![]() ![]() 42740 100-150 1000-1500 |
Q6 ⇒ Wall thickness of schedule 40 pipe as compared to that of schedule 80 pipe is less [other wrong options] [Discuss in forum] ![]() ![]() more same cither (a) or (b); depends upon the I.D. of the pipe |
Q7 ⇒ With increase in gas flow rate to fabric surface area ratio (Nm3/hr/m2 fabric surface area), the size & the cost of a bag filter decreases [other wrong options] [Discuss in forum] ![]() ![]() increases remain unaffected none of these |
Q8 ⇒ 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 smaller reactor should come first. [other wrong options] [Discuss in forum] ![]() ![]() equal sized reactors are the best. larger reactor should come first. none of these. |
Q9 ⇒ The maximum liquid gradient over a tray must not exceed 0.5" -1.25". [other wrong options] [Discuss in forum] ![]() ![]() 2"-3.5". 5". half the tray spacing. |
Q10 ⇒ With increase in pressure drop (for a given particle size), the dust collection efficiency of a cyclone separator will increase [other wrong options] [Discuss in forum] ![]() ![]() decrease remain unaffected increase or decrease depending on the nature of the dust. |
Q11 ⇒ Generally, elliptical dished heads all (a), (b) and (c) [other wrong options] [Discuss in forum] ![]() ![]() are manufactured on 2:1 ratio of major to minor axis and is recommended to be used for pressure vessels operating above a pressure of 1.5 MN/m2 . resist half the pressure rating compared to hemi spherical head provided on the cylindrical shell of the same thickness and diameter. are approximately as strong as seamless cylindrical shell having the corresponding I.D and O.D. |
Q12 ⇒ Thickness of the frame of a plate and frame filter as compared to that of plates is more [other wrong options] [Discuss in forum] ![]() ![]() less same either (a) or (b) |
Q13 ⇒ In a shell and tube heat exchanger, the overall heat transfer co-efficient is proportional to the tube side (volumetric flow rate)0.8. This is valid, only when the ratio of the tube side film resistance to the total resistance is almost equal to 1 [other wrong options] [Discuss in forum] ![]() ![]() ∞ 20.8 2 |
Q14 ⇒ In actual operation of distillation column, the vapour is not distributed uniformly among the bubble caps, primarily because of the liquid gradient on the tray. [other wrong options] [Discuss in forum] ![]() ![]() lower skirt clearance. lower static submergence. small downcomer liquid seal. |
Q15 ⇒ Pick out the wrong statement Flat head covers are most suitable for larger vessels operating at very high pressure. [other wrong options] [Discuss in forum] ![]() ![]() In a flanged and standard dished head, the crown radius is ≤ shell outside diameter. In a flanged and shallow dished head, the crown radius is > shell outside diameter. Flanged only head is a type of flat head in which gradual change in the shape at the centre results in reduced local stresses. |
Q16 ⇒ 1.2 to 3.8 cms is the value of the all (a), (b) and (c). [other wrong options] [Discuss in forum] ![]() ![]() downcomer liquid seal in case of a balanced tray design. static submergence in case of a bubble cap tray for column operating under pressure (≥ 1 atm.). skirt clearance for bubble caps. |
Q17 ⇒ In a shell and tube heat exchanger, the clearance of the tube is generally not less than one-fourth of the tube diameter or 3/16". [other wrong options] [Discuss in forum] ![]() ![]() more than the tube diameter. equal to the tube diameter. more in case of triangular pitch as compared to the square pitch tube layout. |
Q18 ⇒ In the agitators, the power required will be changed with the increase of diameter of agitator (D) as D5 [other wrong options] [Discuss in forum] ![]() ![]() D2 D D9 |
Q19 ⇒ Which of the following factors determine the amount of entrainment in a distillation column ? All (a), (b) and (c). [other wrong options] [Discuss in forum] ![]() ![]() Plate spacing. Depth of liquid above the bubble cap slots. Vapour velocity in the volume between the plates. |
Q20 ⇒ __________ shaped roof is most commonly used for cylindrical tanks. Cone [other wrong options] [Discuss in forum] ![]() ![]() Dome Umbrella Flat |
Or |