Sulfur
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Questions and Answers

Which chemical element has the symbol S and atomic number 16?

  • Chlorine
  • Nitrogen
  • Oxygen
  • Sulfur (correct)

    • Which of the following is a common ore that contains sulfur?

  • Hematite
  • Pyrite (correct)
  • Magnetite
  • Galena

    • In which industry is sulfur one of the most important materials?

  • Chemical process industries (correct)
  • Pharmaceutical industry
  • Aerospace industry
  • Automotive industry

    • Which of the following is a common ore that contains sulfur?

    <p>Galena (PbS)</p> Signup and view all the answers

    What is the chemical formula for hydrogen sulfide?

    <p>HS</p> Signup and view all the answers

    What is the largest application of sulfur?

    <p>Production of fertilizers</p> Signup and view all the answers

    Which method must be used to recover sulphur deposits?

    <p>The Frasch method</p> Signup and view all the answers

    What is the purpose of circulating superheated hot water steam through the well in the Frasch method?

    <p>To melt the sulphur</p> Signup and view all the answers

    What happens to the sulphur after it is recovered at the surface?

    <p>It is melted, cooled, and solidified</p> Signup and view all the answers

    Which of the following is NOT a step in the Frasch process for recovering sulfur?

    <p>Forcing the sulfur into the surface with water pressure</p> Signup and view all the answers

    What is the temperature at which sulfur melts in the Frasch process?

    <p>115 °C</p> Signup and view all the answers

    What is the purpose of introducing hot air in the Frasch process?

    <p>To create a froth in the sulfur</p> Signup and view all the answers

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