कौन सी धातु अपने ही ऑक्साइ� – McqOptions

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1.	कौन सी धातु अपने ही ऑक्साइड से रक्षित होती है -
A.	लोहा
B.	चाँदी
C.	सोना
D.	ऐलुमिनियम
Answer» E.

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