Who discovered Oxygen? (1) Carl Scheele (2) Hooke (3) Heisenberg (4) Williams

Who discovered Oxygen? (1) Carl Scheele (2) Hooke (3) Heisenberg (4) Williams
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(1) Carl Scheele Explanation: Oxygen was discovered for the first time by a Swedish Chemist, Carl Wilhelm Scheele in 1772.He called the gas "fire air".
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