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Chemistry Easy PPSC Uploaded: 04 Sep 2026

What is the freezing point of pure water at standard atmospheric pressure?

  • A 4°C
  • B 100°C
  • C -10°C
  • D 0°C
Correct Answer: Option D — 0°C
Explanation:
Pure water freezes at exactly 0 degrees Celsius (32°F) under standard atmospheric pressure, though dissolved impurities or solutes can lower this freezing point through freezing point depression.
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