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.
Correct Answer: B
Solution :
[b] The ideal value of D.O for growth of fishes is 8 mg/L. 7mg/ L is desirable range, below this value fishes get susceptible to desease. A value of 2 mg/L or below is lethal for fishes.You need to login to perform this action.
You will be redirected in
3 sec