Yield of charcoal in high temperature carbonisation of wood is about _____________ percent?
Correct answer: B. 25
- A. 10
- B. 25
- C. 50
- D. 75
Explanation
High-temperature carbonisation of wood typically gives about 25% charcoal, with the remaining material leaving mainly as gases, vapours and tar. The 50% figure is too high for charcoal yield under severe carbonisation.
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