वायुमंडल में सबसे अधिक किस – McqOptions

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1.	वायुमंडल में सबसे अधिक किस गैस का प्रतिशत है -
A.	कार्बन
B.	नाइट्रोजन
C.	आक्सीजन
D.	हाइड्रोजन
Answer» C. आक्सीजन

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