पृथ्वी की भू - पर्पटी की संर – McqOptions

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1.	पृथ्वी की भू - पर्पटी की संरचना में किस तत्व की मात्रा सर्वाधिक पायी जाती है -
A.	ऑक्सीजन
B.	सिलिकान
C.	एल्युमिनियम
D.	लोहा
Answer» B. सिलिकान

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