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Which one of the following statement is no true? (1) Oxides of sulphur, nitrogen and carbon are the most widespread air pollutant (2) pH of drinking water should be between 5.5 – 9.5 (3) Concentration of DO below 6 ppm is good for the growth of fish (4) Clean water would have a BOD value of less than 5 ppm

Which one of the following statement is no true?
(1) Oxides of sulphur, nitrogen and carbon are the most widespread air pollutant
(2) pH of drinking water should be between 5.5 – 9.5
(3) Concentration of DO below 6 ppm is good for the growth of fish
(4) Clean water would have a BOD value of less than 5 ppm

Grade:upto college level

1 Answers

Deepak Patra
askIITians Faculty 471 Points
9 years ago
Sol: Fact Answer : (3)

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