Metals and Alloys Overview
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Questions and Answers

Why does iron rust?

  • Because it is enriched in processing plants
  • Because it is found in clays and rocks
  • Because it is too soft for most work
  • Due to the impurities it contains (correct)

    • Which metal gives hardness to iron?

  • Silicon (correct)
  • Sulfur
  • Copper
  • Aluminum

    • What happens when there is excess sulfur in iron and steel?

  • They become magnetic
  • They become too soft
  • They become brittle (correct)
  • They become harder

    • What does manganese resemble but is not magnetic?

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

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