Multiple choice general knowledge science & technology

Which is the liquid which expands while freezing?

  1. Liquid Mercury

  2. Water

  3. Liquid nitrogen

  4. Mineral oil
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Water is unique among common liquids in that it expands when freezing. This occurs because water molecules form a hexagonal crystal structure in ice that takes up more space than liquid water. This anomalous property is why ice floats and is crucial for aquatic life survival. Most other liquids contract when they freeze.

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