With increase in the oxygen content of the coal, its ______________ decreases?
Correct answer: C. Both A. & B.
- A. Calorific value
- B. Caking power
- C. Both A. & B.
- D. Neither A. nor B.
Explanation
More oxygen in coal generally indicates a lower-rank, more oxidised fuel, which lowers its calorific value and reduces its caking ability. Therefore both listed properties decrease.
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