everyday science MCQ #5951

Who discovered oxygen gas?

everyday science MCQ #5951

  1. Question 1

    Q1. Who discovered oxygen gas?

    • A) J.C. Bose
    • B) Priestley
    • C) Louis Pasteur
    • D) John Napier

    Answer: Priestley

    Explanation: Joseph Priestley isolated oxygen in 1774 by heating mercuric oxide, observing that a candle burned more vigorously in the gas and calling it "dephlogisticated air."