write three main reasons for using alcohol as thermometric liquid
Answers
Answered by
6
Explanation:
Advantages of alcohol over mercury:
(a) Freezing point of alcohol is −117
∘
C and hence can record very low temperature For example in Arctic and Antarctic regions temperature may fall below −80
∘ C which cannot be measured by mercury thermometer because mercury freezes at −39
∘
C
(b) The expansion of alcohol per degree rise in temperature is much more around six times more then that of mercury and hence is more sensitive
(c) it can be coloured brightly by adding some dye in it and hence is easily detectable
please mark me as branilest
Answered by
5
Answer:
Alcohol thermometers are used rather than mercury thermometers in very cold regions because alcohol has a lower freezing point than mercury. Pure ethanol freezes at -115 degrees C, while mercury freezes at -38 degrees C. Thermometers rely upon thermal expansion of the liquid in a bulb at the base of a thin glass tube.
mark my answer as a Brainliest answer...........................
Explanation:
Similar questions