Multiple choice

Which of the following are not the organic impurities of sewage?

  1. Human feces

  2. Oils

  3. Herbicides

  4. Pesticides

  5. Phosphates

Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

This is the correct option. Phosphates are not the organic impurities of sewage. They are the inorganic impurities.