Phytochemistry and Volatile Oils
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Questions and Answers

Which of the following best describes volatile oils?

  • Fixed oils that do not evaporate at ordinary temperature
  • Greasy substances that are used for therapeutic activity
  • Complex liquid mixtures that easily evaporate when exposed to air (correct)
  • Non-volatile substances with varying chemical composition

    • What is the main difference between volatile and fixed oils?

  • Volatile oils have varying chemical composition, while fixed oils do not
  • Volatile oils easily evaporate, while fixed oils do not (correct)
  • Volatile oils are used for therapeutic activity, while fixed oils are not
  • Volatile oils are greasy, while fixed oils are non-greasy

    • Which of the following is a physical property of essential oils?

  • Rancidity upon exposure to O2
  • Resinify
  • Non-greasy (correct)
  • Oxidation by air

    • Which of the following is a characteristic of fixed oils?

    <p>They are triglycerides</p> Signup and view all the answers

    What is the process of volatile oils becoming rancid upon exposure to O2 called?

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

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