In colder temperatures, alcohol thermometers are preferred to mercury thermometers because
A) mercury freezes at -39°C (-38.2°F), whereas alcohol freezes at -120°C (-170°F).
B) alcohol thermometers are generally more accurate, especially in cold temperatures.
C) alcohol thermometers are less expensive and more easily to replace if broken in extreme temperatures.
D) mercury is poisonous and are rarely used in modern thermometers any more.

Question

Quizplus · Accepted Answer

Mercury freezes at a temperature higher than what may be encountered in extremely cold temperatures, making it unsuitable for use in such conditions. Alcohol, on the other hand, has a much lower freezing point and can be used in colder temperatures without freezing.

In Colder Temperatures, Alcohol Thermometers Are Preferred to Mercury Thermometers