Rate of low temperature oxidation of coal due to bad storage conditions_______________?
Correct answer: D. Is accelerated by storage in large heaps with small surface to volume ratio
- A. Decreases with increase in surface area
- B. Does not vary with increase in surface area
- C. Is more for low volatile coal compared to high volatile coal
- D. Is accelerated by storage in large heaps with small surface to volume ratio
Explanation
Large coal heaps have a small surface-to-volume ratio, so heat generated by slow oxidation is trapped and can accelerate further oxidation and spontaneous heating. This makes large, poorly ventilated heaps particularly hazardous.
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