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  1. Earliest thermometer was developed by

    2. A.

     Celsius
    B.

     Fahrenheit
    C.

     Kelvin
    D.

     Galileo

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    Answer : Option D

    Explanation :

    Thermoscopes were the earliest types of thermometers and they only showed changes in temperature but didn't show numerical values. One of the first thermoscopes was developed by Italian inventor, Galeleo Galilei in 1593.

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