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- Question
Pick out the wrong statement pertaining to the design of a long tube vertical evaporator.
Options- A. Tube dia is 3-6 cms, while tube length in 3-6 metres.
- B. Steam is fed to the shell, whereas the liquor is filled inside the tube.
- C. Liquor level is maintained at l/3rd to 1/2 of the height of the tube.
- D. none of these.
- Correct Answer
- none of these.
- 1. 'Utilities' in a chemical process plant includes compressed air, steam, water, electrical power, oxygen, acetylene, fuel gases etc. Utility costs for ordinary chemical process plants ranges roughly from __________ percent of the total product cost.
Options- A. l to 5
- B. 10 to 20
- C. 25 to 35
- D. 35 to 45 Discuss
- 2. The economic life of a large chemical process plant as compared to a small chemical plant is
Options- A. only slightly more
- B. much more
- C. slightly less
- D. almost equal Discuss
- 3. Which of the following is not a speed measuring instrument?
Options- A. Psychrometer
- B. Stroboscope
- C. Tachometer
- D. All (a), (b) and (c) Discuss
- 4. Volumetric expansion is the working principle of the __________ thermometers.
Options- A. mercury in glass
- B. constant volume gas
- C. vapor pressure
- D. bimetallic Discuss
- 5. In producer gas making furnace, steam is added along with air to mainly control the
Options- A. fusion of coal ash & clinker formation.
- B. C. V. of producer gas.
- C. temperature of producer gas.
- D. tar content in producer gas. Discuss
- 6. Protective gas used in the annealing furnace for steel coil comprises of
Options- A. 95% N2 + 5% H2
- B. 5% H2 + 9% N2
- C. 100% CO
- D. 100 %H2 Discuss
- 7. In a muffle furnace, the muffle
Options- A. retards the heat transfer.
- B. assists in temperature equalisation in the charge.
- C. permits the use of controlled atmosphere for the protection of stock.
- D. all (a), (b) and (c). Discuss
- 8. For Indian standard (IS) screens, the mesh number is equal to its aperture size expressed to the nearest deca-micron (0.01 mm). Aperture width of IS screen of mesh number 50 will be approximately __________ microns.
Options- A. 5
- B. 50
- C. 500
- D. 5000 Discuss
- 9. The main pollutant in waste water discharged from a petroleum refinery is oil (both in free and emulsified form). Free oil is removed by
Options- A. biological oxygen pond.
- B. aerated lagoons.
- C. trickling filters.
- D. gravity separator having oil skimming devices. Discuss
- 10. A cylindrical storage tank can have a self supported conical roof,
Options- A. if its diameter is less than 15-20metres.
- B. if its diameter is more than 50 meters.
- C. if the thickness of the roof is more than that of the cylindrical shell.
- D. irrespective of its diameter. Discuss
More questions
Correct Answer: 10 to 20
Correct Answer: much more
Correct Answer: Psychrometer
Correct Answer: mercury in glass
Correct Answer: fusion of coal ash & clinker formation.
Correct Answer: 95% N2 + 5% H2
Correct Answer: all (a), (b) and (c).
Correct Answer: 500
Correct Answer: gravity separator having oil skimming devices.
Correct Answer: if its diameter is less than 15-20metres.
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