Waste Water and BOD Quiz
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Questions and Answers

Which of the following best defines BOD in waste water?

  • The amount of oxygen required for the decomposition of non-biodegradable organic matter present in waste water
  • The amount of oxygen required for the decomposition of inorganic matter present in waste water
  • The amount of oxygen required for the decomposition of all matter present in waste water
  • The amount of oxygen required for the decomposition of biodegradable organic matter present in waste water (correct)

    • What is the formula to calculate BOD5?

  • BOD5 = (DOi + DOf) × Dilution factor
  • BOD5 = (DOi + DOf) / Dilution factor
  • BOD5 = (DOi - DOf) / Dilution factor
  • BOD5 = (DOi - DOf) × Dilution factor (correct)

    • What is deoxygenation in waste water?

  • The addition of oxygen to waste water
  • The process of removing inorganic matter from waste water
  • The process of filtering waste water
  • The depletion of DO content or exertion of BOD by microorganisms in waste water (correct)

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