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 does not indicate high level of pollutants or t

1.	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
Answer» All are CORRECT I and IV only II and II only III and IV only Answer :B