Multiple choice

Which liquid is used in a laboratory thermometer?

  1. Alcohol

  2. Water

  3. Ether

  4. Mercury

  5. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Mercury is the standard liquid used in laboratory thermometers due to its uniform thermal expansion, high boiling point (357°C), and low freezing point (-39°C). It doesn't wet glass, making it easy to read. Alcohol is sometimes used in low-temperature thermometers, but mercury remains the preferred choice for most laboratory applications.

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