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  1. Oxygen was independently discovered by

  2. A.
    Rutherford
    B.
    William Ramsay
    C.
    Joseph Priestley
    D.
    Neils Bohr

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    Answer : Option C

    Explanation :

    Oxygen was independently discovered by Carl Wilhelm Scheele, in Uppsala, in 1773 or earlier, and Joseph Priestley in Wiltshire, in 1774, but Priestley is often given priority because his work was published first.


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