Sulphur in metallurgical coal__________________?
Correct answer: C. Both A. and B.
- A. Contributes to its heating value
- B. Affects the quality of steel produced as cracks develop on the surface while rolling the steel
- C. Both A. and B.
- D. Neither A. nor B.
Explanation
Sulphur contributes some heat on combustion, but in metallurgical coal it is undesirable because it causes hot shortness and surface cracking during steel rolling. Both statements are therefore valid.
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