Question

why is mercury used in theromemter?​

Answer 1

Explanation:

Due to its high density to detect temperature accurately.

This is the answer .

Answer 2

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$\dashrightarrow$Mercury is the only one in liquid state at room temperature.

$\dashrightarrow$It's used in thermometers because it has high coefficient of expansion. Hence, the slightest change in temperature is notable when it's used in a thermometer.

$\dashrightarrow$It also has a high boiling point which makes it very suitable to measure higher temperatures.

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