Lesson eLearning

Which of the following statements about water at 0°C is FALSE?

easy MCQ 2 marks Class 9 · Science · Matter in Our Surroundings
  1. Water freezes to ice at 0°C.
  2. Ice melts to liquid water at 0°C.
  3. Boiling of water occurs at 0°C at standard pressure.
  4. The temperature of ice remains constant as it melts.
Answer
Boiling of water occurs at 0°C at standard pressure

The correct answer is Boiling of water occurs at 0°C at standard pressure — Select the false statement (c).

Step-by-step solution

  1. Identify the standard boiling point of water, which is 100°C at 1 atm.
  2. Examine each statement: (a) Water freezes to ice at 0°C – true; (b) Ice melts to liquid water at 0°C – true; (c) Boiling of water occurs at 0°C – false; (d) The temperature of ice remains constant as it melts – true.
  3. Select the false statement (c).
Common mistake: Confusing freezing point with boiling point

Concept tested: Phase change at fixed temperature

Published · How this solution was prepared and checked

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