railway RRB Technician Grade 3 Mock Test 2024 General Science Chemistry States of Matter

खालीलपैकी कोणते मूलद्रव्यात्मक वायूचे उदाहरण नाही?

1
हायड्रोजन
2
ऑक्सिजन
3
नायट्रोजन
4
कार्बन डाय ऑक्साइड
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