GATE XE (Engineering Sciences) 2025 - Question 76

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Section: Thermodynamics | Type: MSQ | Marks: 2

For a pure substance that expands on freezing, which of the following statement(s) is/are CORRECT?

  • A. Temperature of the liquid phase can be lower than the temperature at the triple point
  • B. Critical pressure is equal to the pressure at the triple point
  • C. Highest pressure at which the vapour phase can exist is the pressure at the triple point
  • D. Highest temperature at which solid-liquid phase change can happen is the temperature at the triple point

Answer: A. Temperature of the liquid phase can be lower than the temperature at the triple point; D. Highest temperature at which solid-liquid phase change can happen is the temperature at the triple point

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