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The constituent of air necessary in the rusting process a...

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

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Correct answer is A

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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