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Discussion

Ultimate analysis of coal determines

  • A.the size distribution of the coal particles
  • B.the fusion temperature of the coal's ash
  • C.the elemental composition of the coal
  • D.the moisture, volatiles, ash and fixed carbon

Answer: C

Carbon, hydrogen, nitrogen, sulphur and oxygen are found by chemical means, oxygen usually by difference. It is what a combustion calculation and Dulong's formula require, whereas the proximate analysis guides the choice of firing equipment.

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