Water Treatment and Hardness Quiz
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Questions and Answers

Which ions react with sodium salts of soap to form insoluble scum in water?

  • Potassium and sulfate ions
  • Iron and zinc ions
  • Sodium and chloride ions
  • Calcium and magnesium ions (correct)

    • What is the property of water that prevents lather formation with soap?

  • Alkalinity
  • Chloride presence
  • Soap consuming capacity (correct)
  • Sodium content

    • Which type of hardness can be removed by simple boiling?

  • Non-Alkaline Hardness
  • Temporary or Carbonate Hardness (correct)
  • Permanent or Non-Carbonate Hardness
  • Alkaline Hardness

    • What causes permanent hardness in water?

    <p>Chloride, sulfate, and phosphate salts of calcium and magnesium</p> Signup and view all the answers

    Which process is used to remove permanent hardness in water?

    <p>Ion exchange process</p> Signup and view all the answers

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