Which of the following indicates high level of pollution of water?
(A) High `DO` value (B) High `COD` value
(C) High `BOD` value (D) High `TLV`
The correct answer is

Which of the following does not indicate high level of pollutants or the toxic substances I) High DO value II) High COD value Ill) High BOO value IV) High TLV The correct combination is

Which of the following has very high IP_2 value

Which of the following algae has high quality of food value....

Which figure indicates high pitch ?

A good quantity of water will have (A) high DO (B) high BOD (C) high COD