Question Detail
Question
The scientist who first identified the fourth state of matter is:
Correct Answer
Option C is the correct answer.
Detailed Explanation
Sir William Crookes, through his experiments with cathode ray tubes in 1879, is credited with discovering the fourth state of matter, which he called 'radiant matter' and is now known as plasma.
Hint
His work with discharge tubes led to the discovery of the electron and plasma.