Advantages And Disadvantages Of Mercury And Alcohol Thermometer

Heat and Temperature of Class 7

Mercury and Alcohol Thermometer

Advantages Disadvantages
Mercury thermometer
Cheap Display is harder to read
Durable Does not work below -390C (Hg freezing pount)
Accurate Cannot be used for thermograph
Easily calibrated Slow response
  Mercury vapour is poisonous
Alcohol thermometer (compared to a mercury thermometer)
Lower freezing point (-1140C) Less durable (alcohol evaporates)
Larger coefficient of expansion Alcohol can polymerise
Less hazardous Fluid loss by evaporation hard to avoid
  Lower boi


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