Question
Download Solution PDFMercury level do not rises or goes down after use in _____________ thermometer.
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFConcept:
Thermometer:
- A device that measures the temperature is called a thermometer.
- A thermometer is based on the principle of thermal expansion.
- Mercury, liquid metal with high density is used.
- More the heat more will be the expansion.
|
Clinical Thermometer |
Laboratory Thermometer |
|
It is used to measure body temperature. |
It is used in laboratories for experiments. For example, checking the melting or boiling point |
|
The range of temperature is from 35 ° C to 45 ° C usually. |
The range varies from - 10 ° C to 110 ° C usually. |
|
It uses a Kink near the bulb of the thermometer so that the mercury level does not drop when reading is taken by keeping the thermometer horizontally. |
It does not require a kink to hold mercury level as the reading is taken vertically while any boiling or freezing is going on. |
Kink
- The kink is a constriction that prevents the movement of mercury in the tube.
- Due to this, the mercury takes time to reach a given temperature reading and also does not fall rapidly.
Conclusion:
- The Kink do not allows the mercury level to fall down just after we take it out from mouth.
- We have to give jerk to the thermometer so that we can bring it down and use it again.
- No such kink is present in laboratory thermometer.
- So, the correct option is clinical thermometer.
- We should clean clinical thermometer with antiseptic after use.
Last updated on May 8, 2025
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