Objective Type Questions \( \mathrm{P} \) For clean water \( \mathr...

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Objective Type Questions
\( \mathrm{P} \)
For clean water \( \mathrm{BOD} \) is less then
W
(1) \( 17 \mathrm{ppm} \)
(2) \( 12.2 \mathrm{ppm} \)
(3) \( 7 \mathrm{ppm} \)
(4) \( 5 \mathrm{ppm} \)
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