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आग बुझाने वाली गैस ..
1.
आग बुझाने वाली गैस कौन-सा है ?
A.
नाइट्रोजन
B.
कार्बन डाइऑक्साइड
C.
ऑक्सीजन
D.
इनमें से कोई नहीं
Answer» C. ऑक्सीजन
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