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      Question

      What is a key advantage of Chemical Oxygen Demand (COD)

      over Biochemical Oxygen Demand (BOD) in water analysis?
      A COD measures biodegradable substances more accurately. Correct Answer Incorrect Answer
      B COD requires a shorter testing time. Correct Answer Incorrect Answer
      C COD correlates consistently with BOD measurements. Correct Answer Incorrect Answer
      D COD measures dissolved oxygen directly. Correct Answer Incorrect Answer

      Solution

      COD test results are available in a shorter time frame (around 2 hours) compared to the standard BOD test, which takes 5 days, making COD advantageous for faster assessments of water quality.

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