Advantages and disadvantages of mecury and alcohol as thermometric liquid
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Advantages :- Advantages of using alcohol over mercury as thermometric liquid are: i) Alcohol has greater value of temperature coefficient of expansion than mercury. ii) it's freezing point is below –100°C. Thus, alcohol thermometer is more sensitive than mercury thermometer and can be used to measure the temperature below –40°C.
disadvantages:- ( 1) Mercuryvapour is poisonous
(2) less durable (alcohol evaporates)
(3) alcohol can polymerise
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