Multiple choice

The freezing point of mercury is

    • 12°C
    • 30°C

  3. 42°C
    • 39°C
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Mercury freezes at -39°C, which is exceptionally low compared to most metals and liquids. This property is why mercury thermometers cannot be used in extremely cold environments like polar regions - the mercury would solidify and cease to function. The negative sign indicates a temperature below freezing point of water.

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