COD of water is checked by:
Correct answer: C. Both (A) and (B)
- A. By adding bacteria to the water
- B. Adding chemical oxidizing agent
- C. Both (A) and (B)
- D. None of the above
Explanation
To check the Chemical Oxygen Demand (COD) of water, you typically add bacteria and an oxidizing agent to the water sample. The bacteria help break down the organic matter in the water, while the oxidizing agent helps determine the amount of oxygen required for the oxidation process. By measuring the amount of oxygen consumed, you can determine the COD of the water sample.
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