Chemistry, asked by chandu0071490, 8 months ago

wii) The optimum D O in natural water is ---- ppm
a) 2 to 4
b) 4 to 6
c) 6 to 8
d) 8 to 10

Answers

Answered by dilpreet8041

0

Answer:

it will be 8 to 10

Explanation:

Hope it may help

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