Multiple Choice
What is not a commercial method for the preparation of hydrogen gas?
A) H2O(g) + CH4(g) → CO(g) + 3 H2(g)
B) 2 H2O(l) → 2 H2(g) + O2(g)
C) H2O(g) + C(s) → CO(g) + H2(g)
D) 4 H2O(g) + 3 Fe → Fe3O4(s) + 4 H2(g)
Correct Answer:

Verified
Correct Answer:
Verified
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