Multiple choice

Which is considered to be an anamolous compound?

  1. Water

  2. Sodium chloride

  3. Formic acid

  4. Formaldehyde
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Water is considered an anomalous compound because it exhibits anomalous expansion - it expands (becomes less dense) when it freezes at 0°C, unlike most other substances which contract on solidification. This unique property is crucial for aquatic life survival in winter.

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