Quantity of coke produced from metallurgical coal may be around _____________ percent?
Correct answer: C. 75
- A. 30
- B. 50
- C. 75
- D. 95
Explanation
Carbonisation of metallurgical coal commonly gives roughly 70–75% coke by mass, with the remainder becoming gas, tar, liquor and other products. Therefore 75% is the appropriate estimate.
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