Which of the following is a rich fuel gas ?
Correct answer: C. Refinery gases
- A. Producer gas
- B. Coal gas from underground gasification of coal
- C. Refinery gases
- D. None of these
Explanation
Refinery gases contain substantial amounts of readily combustible hydrocarbons such as methane, ethane, propane and butanes, giving them a high calorific value. Producer gas and underground-gasification gas are diluted mainly by nitrogen, carbon monoxide and carbon dioxide.
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