Volatile matter content in coking coal may be about _____________ percent?
Correct answer: C. 22
- A. 1
- B. 7
- C. 22
- D. 46
Explanation
Coking coal generally has a volatile-matter content near 20 to 25%, making 22% a representative value. Values such as 1% are characteristic of nearly fixed-carbon material, not normal coking coal.
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