Chemistry: Metals, Non-Metals, and Alloys

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Questions and Answers

What is the term for elements that have intermediate properties of metals and non-metals?

  • Ores
  • Metalloids (correct)
  • Alloys
  • Minerals

What is the term for a homogeneous mixture of a metal with other elements?

  • Ore
  • Alloy (correct)
  • Mineral
  • Amalgam

What is the term for a homogeneous mixture of a metal with mercury?

  • Amalgam (correct)
  • Alloy
  • Mineral
  • Ore

What is the process of extracting metals from their ores?

<p>Metallurgy (C)</p> Signup and view all the answers

What is the term for the unwanted earthy impurities in powdered ore?

<p>Gangue (D)</p> Signup and view all the answers

What is an example of a mineral that is not an ore?

<p>Clay (A)</p> Signup and view all the answers

Which of the following processes is used to remove earthy impurities from powdered ore?

<p>Froth floatation process (A)</p> Signup and view all the answers

Which type of ore is concentrated using the froth floatation process?

<p>Sulphide ores (D)</p> Signup and view all the answers

What is the principle behind the gravity separation process?

<p>Difference in density of ore and matrix (B)</p> Signup and view all the answers

Which of the following processes is used to separate magnetic impurities from non-magnetic ore?

<p>Magnetic separation process (A)</p> Signup and view all the answers

What is the purpose of calcination?

<p>To remove volatile impurities and moisture (B)</p> Signup and view all the answers

What is the result of calcination of carbonate or hydroxide ores?

<p>Formation of oxide ores (C)</p> Signup and view all the answers

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