Question

State all differences between alcoholic and mercury thermometer

Answer 1

Alcohol Thermometer
1. It can measure a low temperature because its freezing point is low
2. Can measure the temperature precisely because it has large expansion coefficient
3. Less hazardous
4. Less durable as alcohol evaporates
5. It is colourless so need a dyestuff to see

Mercury Thermometer
1. It is visible because its colour is silvery shining
2. Mercury is harmful metal and therefore hazardous if its tube is broken
3.It cannot measure the temperature quickly and precisely
4. Price is very high
5. It cannot measure very low temperature because its boiling point is low