As the equilibrium moisture content of the coal increases, its___________________?
Correct answer: C. Swelling number decreases
- A. Calorific value increases
- B. Swelling number increases
- C. Swelling number decreases
- D. Bulk density decreases
Explanation
Higher moisture dilutes the combustible matter and generally reduces coal swelling during heating. Thus the swelling number decreases as equilibrium moisture content increases.
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