A. pulverising coal in inert atmosphere
B. heating wood in a limited supply of air at temperatures below 300GC
C. strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel
D. binding the pulverised coal into brick-etts
E. enriching carbon in the coal
Correct Answer: strongly heating coal continuously for about 48 hours in the absence of air in a closed vessel ✔
Last Updated: May 18, 2023