Food Analysis Techniques: NMR Spectroscopy
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Questions and Answers

What type of information does NMR spectroscopy provide about a molecule?

  • Number of electrons in the molecule
  • Number of protons in the molecule
  • Types of bonds in the molecule
  • Types of atoms in the molecule (correct)

    • Which type of NMR spectroscopy is used to determine the types and number of H atoms in a molecule?

  • 13C NMR
  • 19F NMR
  • 31P NMR
  • 1H NMR (correct)

    • What is the source of energy in NMR spectroscopy?

  • Visible light
  • Radio waves (correct)
  • Gamma rays
  • Ultraviolet light

    • Why is it important for the sample to be dissolved in Deuterated solvent for NMR spectroscopy?

    <p>Avoids interference from solvent signals</p> Signup and view all the answers

    What is one advantage of using NMR in food analysis?

    <p>Low amount of analytes required</p> Signup and view all the answers

    What physical properties can NMR be used to examine in food analysis?

    <p>Melting, crystallization, polymorphism, and oil content</p> Signup and view all the answers

    What is a disadvantage of using NMR compared to other techniques?

    <p>Low selectivity</p> Signup and view all the answers

    Why are radiowaves considered safe for use in food analysis?

    <p>They are non-ionizing radiation</p> Signup and view all the answers

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