Electrochemical corrosion can occur, only if __________ is present in contact with metal.

Electrochemical corrosion can occur, only if __________ is present in

1.	Electrochemical corrosion can occur, only if __________ is present in contact with metal.
A.	air
B.	oxygen
C.	liquid medium
D.	gaseous medium
Answer» D. gaseous medium

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Electrochemical corrosion can occur, only if __________ is present in contact with metal.

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