engineering chemistry MCQ #3101

The COD of a water sample is 100 mg/L. What does it indicate?

engineering chemistry MCQ #3101

  1. Question 1

    Q1. The COD of a water sample is 100 mg/L. What does it indicate?

    • A) Low organic pollution
    • B) Moderate organic pollution
    • C) High organic pollution
    • D) No organic pollution

    Answer: High organic pollution

    Explanation: COD (Chemical Oxygen Demand) measures oxygen required to oxidize organic matter; 100 mg/L indicates high pollution