Percentage of carbon monoxide in blast furnace gas may be around ____________________ ?
Correct answer: C. 22
- A. 8
- B. 14
- C. 22
- D. 52
Explanation
Blast-furnace gas typically contains roughly 20 to 25% carbon monoxide, along with nitrogen, carbon dioxide and a small amount of hydrogen. Therefore about 22% is a representative value.
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