निम्न में से सबसे हल्की गै� – McqOptions

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1.	निम्न में से सबसे हल्की गैस है -
A.	नियॉन
B.	हीलियम
C.	नाइट्रोजन
D.	ऑक्सीजन
Answer» C. नाइट्रोजन

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