पृथ्वी के वायुमंडल में कौन – McqOptions

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1.	पृथ्वी के वायुमंडल में कौन-सा गैस विपुल मात्रा में है?
A.	नाईट्रोजन
B.	ऑक्सीजन
C.	आर्गन
D.	कार्बनडाईऑक्साइड
Answer» B. ऑक्सीजन

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