A) high fluidity
B) high density
C) high conductivity
D) high specific heat
Correct Answer: C
Solution :
Mercury is the only one in liquid state at room temperature. It's used in thermometers because it has high coefficient of expansion. It also has a high boiling point which makes it very suitable to measure higher temperatures. Due to high conductivity and low specific heat, a mercury thermometer acquires thermal equilibrium with the surrounding body more quickly.
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