Question

Carbon exists in the atmosphere in the form of
(A) carbon monoxide only

(B) carbon monoxide in traces and carbon dioxide

(C) carbon dioxide only

(D) coal

???

Answer 1

Explanation:

it's B,,,,,,,,,,,,,,,,

Answer 2

The carbon dioxide formed in this process is re-reduced to carbon monoxide by the coke: C(s) + CO2(g) → 2 CO.