Chemistry Quiz: Colloidal Solutions, Metal Extraction, and Electrolytes
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Questions and Answers

What is the size range of colloidal particles in a colloidal solution?

  • 10^-9 - 10^-12 m
  • 10^-12 - 10^-19 m
  • 10^-6 - 10^-9 m (correct)
  • 10^-19 - 10^-22 m

    • Which metal is extracted through the MacArthur method?

  • Cu
  • Au
  • Ag (correct)
  • Fe

    • Why is KCl used in a salt bridge?

  • The conductivities of K+ and Cl- ions are almost equal (correct)
  • It forms a thick solution with gelatin
  • It is an electrolyte
  • It is a good conductor of electricity

    • What is milk classified as?

    <p>Fat dispersed in water</p> Signup and view all the answers

    Which type of catalysis involves a catalyst that is in a different phase from the reactants?

    <p>Heterogeneous catalysis</p> Signup and view all the answers

    In the smelting method for the extraction of iron metal, which chemical composition forms the slag?

    <p>CaSiO3</p> Signup and view all the answers

    What metal is used to heat an electric iron?

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

    Which radioactive element has large reserves found in India?

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

    Which compound is commonly used in mouthwashes and toothpastes?

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

    What is ultimately formed as a result of radioactive electrification of uranium?

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

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