Question

Why mercury is used in clinical thermometers.

Answer 1

1. Mercury is used in clinical thermometers.
2. By using mercury we can measure a wide range of temperatures.
3. Since its freezing point is $-{39}^{0}c$and boiling point is ${357}^{0}c$.
4. Its expansion is uniform.
5. It can easily be seen through the glass.
6. It does not stick to the glass.
7. It can be easily obtained in pure form.
8. Hence, mercury is used in clinical thermometers.