Degree of carbonisation of coal during coke making can be roughly judged by the ______________ of the coke produced?
Correct answer: B. Volatile matter
- A. Colour
- B. Volatile matter
- C. Ash content
- D. Moisture content
Explanation
Carbonisation drives off volatile constituents, so the volatile-matter content of coke is a practical indication of how far carbonisation has progressed. Lower residual volatile matter generally indicates more complete carbonisation.
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