Q. Priestley discovered oxygen in
A) 1770
B) 1774
C) 1778
D) 1782
Explanation
Joseph Priestley (1733-1804) in 1770 performed a series of experiment that revealed the essential role of air in growth of green plant. He also discovered oxygen in 1774
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.