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Disolved oxygen (DO) in water should be? | Ace MCQs
FD
Falak Durrani
2 years ago
Everyday Science
Disolved oxygen (DO) in water should be?
A
400 to 800 ppm
B
4000 to 8000 p
C
0.4 to 0.5 ppm
D
4 to 5 ppm
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