हवा मेँ ऑक्सीजन की मात्रा लगभग प्रतिशत 20 % है।
75
Hawa me oxygen ki matra kitna hota he
Hawa me nitrogen kitna hota hai?
Hawa me oxygen ka tanasub 21 percent 75 percent, 78 percent 10 percent
Shudh oxygen mein hawa ki Matra kitni hai
हब हवा मेरा कितना परसेंट ऑक्सीजन कार्बन डाइऑक्साइड है
Hava main oxygen kitna percent hota hai
Vayu mein kitne pratishat oxygen Hote Hain
हवा मेँ ऑक्सीजन की मात्रा लगभग प्रतिशत
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