Which one of the following statement is not true?

1.	Which one of the following statement is not true?
Answer» CLEAN water would have a BOD value of less than 5 ppm oxides of SUPHUR NITROGEN and carbon are the most widesperead ari [POLLUTANT ph of drinking water should be between 5.5-9.5 concentration of DO below 6 ppm is good for the growth of fish Solution :More the concentration of D.O better it is for the growth of the fishes

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