निम्नलिखित में से किस धातु – McqOptions

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1.	निम्नलिखित में से किस धातु का भूपर्पटी में सर्वाधिक बाहुल्य है -
A.	ऐलुमिनियम
B.	आयरन
C.	मैग्नीशियम
D.	सोडियम
Answer» B. आयरन

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