Question

The lower fixed temperature in a celsius thermometer is the melting point of_______.

Answer 1

1. A thermometer is a device used to measure the temperature.
2. Thermometers are of two types- clinical and laboratory thermometers.
3. The lowest temperature which can be measured from a laboratory thermometer is 0⁰C, which is the melting point of ice and the highest temperature is marked as 100⁰C, which is the boiling point of water.

Hence, the lowest fixed temperature in a celsius thermometer is the melting point of pure ice.