|
What percentage of carbon is bituminous coal? |
|||||||
|
(a) |
28-30% |
(b) |
28% |
(c) |
78-86% |
(d) |
94-98% |
|
What percentage of carbon is bituminous coal? |
|||||||
|
(a) |
28-30% |
(b) |
28% |
(c) |
78-86% |
(d) |
94-98% |