बीओडी का मतलब है – McqOptions

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1.	बीओडी का मतलब है
A.	जैविक ऑक्सीजन की कमी
B.	जैविक ऑक्सीजन की मांग
C.	जैविक ऑक्सीजन की मांग
D.	इनमे से कोई भी नहीं
Answer» B. जैविक ऑक्सीजन की मांग

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