Question

Why is mercury preferred over other liquids in a thermometer? [2 Marks]

Answer 1

Mercury is preferred in a thermometer to measure temperature because of the following reasons which are as follows:

1. Mercury expands on increasing the temperature. Even a small change in temperature is notable when it is used in a thermometer. [1 Mark]
2. Mercury has a high boiling point. Thus, it is suitable for measuring even high temperatures. [1 Mark]