Discussion
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- Question
Humidity of air can be determined by a
Options- A. chromatograph
- B. sling psychrometer
- C. mass spectrometer
- D. polarimeter
- Correct Answer
- sling psychrometer
- 1. In a refinery petroleum crude is fractionated into gas fraction, light ends, intermediate distillates, heavy distillates, residues and by products. The group of products including gas oil, diesel oil and heavy fuel oil belongs to the fraction
Options- A. heavy distillates
- B. intermediate distillates
- C. light ends
- D. residues Discuss
- 2. Visbreaking
Options- A. uses natural gas as feed.
- B. is carried out at atmospheric pressure.
- C. produces fuel oil of lower viscosity.
- D. produces gasoline only. Discuss
- 3. Which of the following processes is used for the production of petroleum coke?
Options- A. Stabilisation
- B. Visbreaking
- C. Cracking
- D. Reforming Discuss
- 4. Octane number (unleaded) of gasoline produced by isomerisation of butane may be about
Options- A. 45
- B. 55
- C. 70
- D. 90 Discuss
- 5. Feedstock for polymerisation is
Options- A. naphtha.
- B. cracked gases rich in C2 & C4 olefins.
- C. low boiling aromatics.
- D. none of these. Discuss
- 6. Concentration of sugar solution can be determined by the
Options- A. polarimetry
- B. flame photometry
- C. emission spectroscopy
- D. oscillometry Discuss
- 7. Nitrogen gas constant volume thermometer is suitable for measuring a temperature of __________ °C.
Options- A. 0-100
- B. < 0
- C. > 100.
- D. > 50 Discuss
- 8. Strain gage uses an electrical conductor wire, which when elastically stretched increases in length and reduces in diameter. Both these dimensional changes result in __________ in the electrical resistance of the wire.
Options- A. no change
- B. decrease
- C. increase
- D. exponential decrease Discuss
- 9. Specific gravity of a liquid can not be measured by a/an
Options- A. anemometer
- B. specific gravity bottle
- C. pycnometer
- D. hydrometer Discuss
- 10. The frequency response of a first order system, has a phase shift with lower and upper bounds given by
Options- A. - ?, ?/2
- B. -?/2, ?/2
- C. -?/2, 0
- D. 0, ?/2 Discuss
Process Control and Instrumentation problems
Search Results
Correct Answer: heavy distillates
Correct Answer: produces fuel oil of lower viscosity.
Correct Answer: Cracking
Correct Answer: 70
Correct Answer: cracked gases rich in C2 & C4 olefins.
Correct Answer: polarimetry
Correct Answer: > 100.
Correct Answer: increase
Correct Answer: anemometer
Correct Answer: 0, ?/2
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