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- Question
The number of neutrons in the nucleus of Uranium-233 (92U233) is
Options- A. 141
- B. 92
- C. 233
- D. 325
- Correct Answer
- 141
- 1. Which of the following factors determine the amount of entrainment in a distillation column?
Options- A. Plate spacing.
- B. Depth of liquid above the bubble cap slots.
- C. Vapour velocity in the volume between the plates.
- D. All (a), (b) and (c). Discuss
- 2. What is the slope of the operating line in the stripping section of a distillation column?
Options- A. 0
- B. ?
- C. > 1
- D. < 1 Discuss
- 3. Baffles are provided in a shell and tube heat exchanger to increase the turbulence and velocity of the shell side fluid. Which of the following shaped baffles does not fall in the category of transverse baffle?
Options- A. Segmental baffle
- B. Flat plate extending across the wall
- C. Disk type baffle
- D. Helical type baffle Discuss
- 4. Which of the following lengths of heat exchanger tubes are normally not used in practice?
Options- A. 2.5 metres
- B. 6 metres
- C. 10 metres
- D. 0.5 metre Discuss
- 5. 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?
Options- A. hemispherical
- B. ellipsoidal (2 : 1)
- C. conical
- D. flat plate Discuss
- 6. Of the pressure vessels, with same thickness but different diameters, which one withstands higher pressure?
Options- A. Larger dia vessel.
- B. Smaller dia vessel.
- C. Larger dia long vessel.
- D. Strength of the vessel is same irrespective of the diameter. Discuss
- 7. For a cylinderical vessel of moderate height, the weld joint efficiency for joints parallel to the cylinderical axis is given as 1.0, while for joints along the girth (circumference) it is given as 0.8. In calculating the shell wall thickness using code formula for an internally pressurised cylinderical vessel, what value of weld joint efficiency should be used?
Options- A. 0.8
- B. 0.9
- C. 1.0
- D. (0.8)0.5 Discuss
- 8. Which of the following is the most common type of baffle used in industrial shell and tube heat exchanger?
Options- A. 75% cut segmental baffle.
- B. 25% cut segmental baffle.
- C. Orifice baffle.
- D. Disk and doughnut baffle. Discuss
- 9. What is the minimum recommended ligament for square pitch arrangement in case of heat exchangers?
Options- A. 6.5 cms
- B. 6.5 mm
- C. Equal to tube I.D
- D. Equal to tube O.D Discuss
- 10. Which of the following packing materials provides for maximum mass transfer?
Options- A. Lessig rings.
- B. Raschig rings.
- C. Cross-partition rings.
- D. All give the same value. Discuss
More questions
Correct Answer: All (a), (b) and (c).
Correct Answer: > 1
Correct Answer: Flat plate extending across the wall
Correct Answer: 10 metres
Correct Answer: ellipsoidal (2 : 1)
Correct Answer: Smaller dia vessel.
Correct Answer: 0.8
Correct Answer: 25% cut segmental baffle.
Correct Answer: 6.5 mm
Correct Answer: Cross-partition rings.
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