Why mercury is used as a thermometric liquid mention its two advantages
Answers
Explanation:
Mercury is the only one in liquid state at room temperature. It's used in thermometers because it has high coefficient of expansion. Hence, the slightest change in temperature is notable when it's used in a thermometer. It also has a high boiling point which makes it very suitable to measure higher temperatures.
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Explanation:
The reasons for using mercury as a thermometric liquid are the following: 1. It expands uniformly when heated. 2. It has low specific heat capacity. 3. I has a high boiling point (357 °C) and a low freezing point (-39 °C). 4. It is a good conductor of heat. 5. It does not stick to the walls of the glass tube. 6. It is opaque and shiny and hence clearly visible. 7. It is available in pure form.
The Superiorities or the advantages of Alcohol:
It can measure a low temperature, because its freezing point is low(-115ºC). It can measure the temperature precisely, because it has large expansion coefficient. Its expansion is reguler.
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