engineering recuitment NVS Electrician Cum Plumber 2022 Mock Test General Science Chemistry Chemistry in Everyday Life

नाइट्रोजन गैस हमारे वायुमंडल का _______ बनाती है।

1
80 - 85 प्रतिशत
2
75 - 80 प्रतिशत
3
90 - 95 प्रतिशत
4
85 - 90 प्रतिशत
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