Environmental Chemistry - Result Question 10
####11. Which one of the following statement is not true?
[2011]
(a) $pH$ of drinking water should be between $5.5-9.5$.
(b) Concentration of DO below $6 ppm$ is good for the growth of fish.
(c) Clean water would have a BOD value of less than $5 ppm$.
(d) Oxides of sulphur, nitrogen and carbon are the most widespread air pollutant.
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Solution:
- (b) The growth of fishes get hindered if the concentration of D.O. is below $6 ppm$.
