#QuizOfTheDay: #Hydrogen is the lightest element and the most abundant chemical substance in the universe, constituting roughly 75% of all normal matter.
Do you know who discovered Hydrogen?
A. Harold Urey
B. Henry Cavendish
C. Joseph Priestley
D. Antoine Lavoisier
https://knowledgezone.co.in/resources/quiz?qId=64533aa396885b357927ae27








