Industrial Applications of Radioactive Isotopes
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Questions and Answers

What is the role of radium, promethium, and thulium with phosphor in certain objects?

  • To examine the material inside a packing
  • To create luminescent paint for decorating ceramic articles (correct)
  • To measure radioactivity levels in industrial equipment
  • To detect flaws in metal work using gamma rays

    • What is the purpose of using cobalt-60 and iridium-192 in radiography?

  • To detect flaws in metal work (correct)
  • To decorate ceramic articles
  • To make certain objects visible in the dark
  • To measure the thickness of iron sheets

    • How are radioactive substances used to measure the thickness, density, and level of materials like aluminium, plastic, and iron sheets?

  • By using sound waves to determine the density
  • By emitting visible light to measure the thickness
  • By directly measuring the weight of the materials
  • By placing a radioactive substance on one side and measuring radiation on the other (correct)

    • What was used earlier to create luminous colors for decorating ceramic tiles, utensils, and plates?

    <p>Uranium oxide</p> Signup and view all the answers

    Which radioactive isotope is used for food preservation?

    <p>Cobalt-60</p> Signup and view all the answers

    What is the radioactive isotope used in the treatment of hyperthyroidism?

    <p>Iodine-123</p> Signup and view all the answers

    Which isotopes are used in the treatment of bone cancer?

    <p>Strontium-89, Strontium-90, Radium-223</p> Signup and view all the answers

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