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      Question

      Dry ice is:

      A Solid nitrogen Correct Answer Incorrect Answer
      B Solid oxygen Correct Answer Incorrect Answer
      C Solid carbon dioxide Correct Answer Incorrect Answer
      D More than one of the above Correct Answer Incorrect Answer
      E None of the above Correct Answer Incorrect Answer

      Solution

      Explanation: Dry ice is the solid form of carbon dioxide (CO₂). It is commonly used as a cooling agent because it sublimates at -78.5°C (-109.3°F), transitioning directly from solid to gas without passing through a liquid phase.

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