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Oxygen was independently discovered by

  • A.William ramsay
  • B.Joseph priestley
  • C.Rutherford
  • D.Niels Bohr

Answer: B

Joseph Priestley discovered it independently.

He isolated the gas in 1774 by heating mercuric oxide with a burning glass, and called it dephlogisticated air. Carl Wilhelm Scheele had prepared it earlier but published later; Lavoisier named it oxygen and explained what it was.

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