Diamonds Unveiled
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Questions and Answers

Which of the following is true about the formation of diamonds from elemental carbon?

  • Diamonds have imperfections that occur rapidly at high pressure and temperature.
  • Diamonds can transform into graphite over time at low ambient temperature and pressure. (correct)
  • Diamonds are formed at low pressure and temperature.
  • Diamonds are a more stable form of carbon than graphite.

    • Which of the following describes the polymorphic forms of Theobroma oil?

  • Theobroma oil exists in four polymorphic forms: gamma, alpha, beta prime, and beta. (correct)
  • Theobroma oil exists in three polymorphic forms: gamma, alpha, and beta.
  • Theobroma oil exists in two polymorphic forms: alpha and beta.
  • Theobroma oil exists in five polymorphic forms: gamma, alpha, beta, delta, and epsilon.

    • What is the melting temperature of the alpha form of Theobroma oil?

  • 34.5°C
  • 28°C
  • 18°C
  • 22°C (correct)

    • What is the melting temperature range of Theobroma oil?

    <p>34°C–36°C</p> Signup and view all the answers

    Why can residual solvents be trapped in crystalline pharmaceutical solids?

    <p>Pharmaceutical solids are crystallized out of different solvents.</p> Signup and view all the answers

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