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Select the correct answer: A closed bottle containing water at 300°C is carried to the moon in a spaceship. If it is placed on the surface of the moon, what will happen to the water as soon as the lid is opened?
  1. It will decompose into H₂ and O₂
  2. Water will boil
  3. Water will freeze
  4. None of these
Explanation
  • On the moon, there is no atmospheric pressure, which lowers the boiling point of water.
  • Since the water is at 300°C, it will immediately boil once the lid is opened.

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