The weathering index of a coal________________?
Correct answer: C. Is a measure of its size stability, when stored & exposed to weather
- A. Gives an idea of the fusion temperature of ash
- B. Is related to its calorific value
- C. Is a measure of its size stability, when stored & exposed to weather
- D. Is a measure of its caking tendency
Explanation
The weathering index indicates how well coal retains its size and physical integrity during storage while exposed to air and weather. It is therefore different from ash-fusion temperature, calorific value, and caking tendency.
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