Tag: Oxygen

Joseph Priestley Quiz Questions with Answers 1. When did Joseph Priestley discover oxygen? a) 22 January 1756 b) 5 April 1654 c) 1 August 1774 d) 12 December 1772 2. What did Joseph Priestley call oxygen? a) Dephlogisticated air b) Laughing gas c) Marine acid air d) Vitriolic acid air 3. When was Joseph Priestley born? a) 13 March 1733 b) 10 May 1751 c) 25 September 1726 d) 30 November 1742