Water Pollution Classification Quiz
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Questions and Answers

Which type of water has less chances of contamination?

  • Ground water (correct)
  • Water with objectionable dissolved gases
  • Water with high concentration of suspended materials
  • Surface water

    • What is the optimum dissolved oxygen (DO) required for healthy fish and other aquatic life in natural water?

  • 1 to 3 mg/l
  • 5 to 8 mg/l (correct)
  • 8 to 15 mg/l
  • 15 to 20 mg/l

    • Which type of water has greater chances of hardness?

  • Water with less suspended materials
  • Ground water
  • Water with objectionable dissolved gases
  • Surface water (correct)

    • What is one of the most important measures of water quality mentioned in the text?

    <p>Amount of dissolved oxygen (DO)</p> Signup and view all the answers

    What can threaten fish and other aquatic life if it drops in water?

    <p>Dissolved oxygen (DO)</p> Signup and view all the answers

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