officerpath@gmail.com Hyderabad, Pakistan
Login Register
Latest Jobs CSS 2025 PMS CCE Sindh FPSC PPSC MCQs Past Papers Current Affairs Scholarships Admissions Downloads Roll No. Slips Results
Chemical Engineering

Fuels And Combustion MCQs

Practice Fuels And Combustion MCQs for competitive exams.

Fuels And Combustion MCQs

Practice questions from this topic.

Efficiency of the combustion of a fuel is judged by the __________ the flue gas.

  1. A. % of CO 2 in
  2. B. % of O 2 in
  3. C. Temperature of
  4. D. Colour of
Report Error

Gobar gas is produced by the __________ of cown dung.

  1. A. Fermentation
  2. B. Oxidation
  3. C. Hydrogenation
  4. D. None of these
Report Error

Dry air required to burn 1 kg of carbon completely may be around __________ kg.

  1. A. 11
  2. B. 2
  3. C. 20
  4. D. 38
Report Error

Volatile matter content in coking coal may be about __________ percent.

  1. A. 1
  2. B. 7
  3. C. 22
  4. D. 46
Report Error

Carbon Content by weight in air dried wood may be about __________ percent.

  1. A. 10
  2. B. 25
  3. C. 50
  4. D. 80
Report Error

For which pair of the fuel gases, calorific value (C.V.) of one fuel is almost double that of the other on volume basis (i.e., kcal/Nm 3 ), while the C.V. is same on weight basis (i.e., kcal/kg)?

  1. A. Propane and acetylene
  2. B. Propane and LPG
  3. C. Sewage gas and gobar gas
  4. D. B.F. gas and coke oven gas
Report Error

Washing of coal decreases its

  1. A. Caking index
  2. B. Mineral matter content
  3. C. Ash content
  4. D. Both B and C
Report Error

Washing of coal

  1. A. Reduces its sulphur and ash content
  2. B. Controls its ash fusibility and increases its calorific value
  3. C. Improves its coking properties
  4. D. All of the above
Report Error

Oxygen content in a flue gas was found to be 4%. It implies that excess air used for combustion was around __________ percent.

  1. A. 4
  2. B. 96
  3. C. 20
  4. D. 40
Report Error

Which of the following coal gasification processes will produce gas having maximum methane content?

  1. A. Winkler process
  2. B. Lurgi process
  3. C. Kopper-Totzek process
  4. D. All of the above
Report Error

Bomb calorimeter is used for the determination of calorific value of the __________ fuels.

  1. A. Gaseous
  2. B. Solid
  3. C. Liquid
  4. D. Both B and C
Report Error

Air/gas ratio for complete combustion will be the highest for

  1. A. LPG
  2. B. Gobar gas
  3. C. Coke oven gas
  4. D. Carburetted water gas
Report Error