A) Concentration of DO below 6 ppm is good for the growth of fish
B) Clean water would have a BOD value of less than 5 ppm
C) Oxides of sulphur, nitrogen and carbon are the most widespread air pollutant
D) pH of drinking water should be between 5.5-9.5
Correct Answer: A
Solution :
[a] Growth of fish is inhibited if concentration of DO is below 6 ppm.
You need to login to perform this action.
You will be redirected in
3 sec
