Which of the following metal has a nonprotective oxide? – McqOptions

MCQOPTIONS

1.	Which of the following metal has a nonprotective oxide?
A.	Cadmium (CdO2)
B.	Copper (Cu2O)
C.	Chromium (Cr2O3)
D.	Silicon (SiO2)
Answer» B. Copper (Cu2O)

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