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In which type of coal percentage of carbon is the highest? |
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(a) |
Peat |
(b) |
Lignite |
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(c) |
Bituminous |
(d) |
Anthracite |
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|
In which type of coal percentage of carbon is the highest? |
|
|||
|
(a) |
Peat |
(b) |
Lignite |
|
|
(c) |
Bituminous |
(d) |
Anthracite |
|