The constituent of air necessary in the rusting process are
-
A.
O2 and H2O -
B.
Ar and CO2 -
C.
CO2 and H2O -
D.
O2 and CO2
Correct Answer: Option A
Explanation
Rust is an iron oxide, a usually red oxide formed by the redox reaction of iron and oxygen in the presence of water or air moisture.
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