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    Question

    Which among the following is measured by Dobson unit

    ?
    A Ozone concentration Correct Answer Incorrect Answer
    B Thermal conductivity Correct Answer Incorrect Answer
    C Soil moisture Correct Answer Incorrect Answer
    D Radiation Correct Answer Incorrect Answer

    Solution

    Dobson is the most common unit for measuring ozone concentration. One Dobson unit is the number of molecules of ozone that would be required to create a layer of pure ozone 0.01 millimetres thick at a temperature of 0 degree Celsius and pressure of 1 atmosphere. 

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