Difference between Mercury thermometer and Alcohol thermometer
No. |
Mercury thermometer |
Alcohol thermometer |
1. | When mercury is present in the thermometer in a bulb at the bottom of graduated sealed glass then it is referred as mercury thermometer. | When alcohol is present in the thermometer in a bulb at the bottom of graduated sealed glass then it is referred as alcohol thermometer. |
2. | Mercury thermometer are usually highly toxic. | Alcohol thermometer are usually less toxic. |
3. | Mercury thermometer contains mercury and there is no need to be dyed. | Alcohol thermometer contains alcohol and it is dyed because alcohol is colourless. |
4. | The liquid which is present inside the bulb of mercury thermometer is always mercury. | The liquid which is present inside the bulb of alcohol thermometer can be kerosene, toluene and alcohol etc. |
5. | Mercury thermometer is perfect when it comes to measure high temperature. | Alcohol thermometer is perfect when it comes to measure low temperature. |
6. | Mercury thermometer can measure temperature from -37°C to 356°C. | Alcohol thermometer can measure temperature from -115°C to 78.5°C. |