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प्रश्न
State the advantages and disadvantages of mercury and alcohol as thermometric liquids.
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उत्तर
Advantages of mercury and alcohol as thermometric liquid are
(a). They both are good conductors of heat.
(b). They have a high coefficient of expansion thus are sensitive to the smallest change in temperature
(c). Their freezing points are very low and boiling point is high in case of mercury
Disadvantages
(d). Alcohol is transparent and this makes hard to read the thermometer.
(e). It does not have uniform expansion.
(f). Mercury is less sensitive than alcohol as its coefficient of expansion is less than alcohol.
(g). Alcohol is a volatile liquid.
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संबंधित प्रश्न
Write down the temperature of the lower fixed point on the Fahrenheit scale.
The temperature rises by 18°F. What is the rise on the Celsius scale?
Convert the following temperature into Fahrenheit scale:
-400C
Explain the following:
In a solid, heat is not transferred by the process of convection.
Thermal energy always flows from a system at higher temperature to a system at lower temperature.
If you keep ice at 0° C and water at 0° C in either of your hands, in which hand you will feel more chillness? Why?
Match the following:
| Column-I | Column-II | |
| 1. | Length | s |
| 2. | Mass | m |
| 3. | Time | k |
| 4. | Temperature | kg |
