Which of the following scientists is known for the discovery of the proton? MCQ with Answer and Explanation

Which of the following scientists is known for the discovery of the proton?
A. J. J. Thomson
B. James Chadwick
C. Eugen Goldstein
D. Ernest Rutherford
Answer: Option D
Solution (By JKSSB Mock Tests)
Ernest Rutherford is generally credited with the discovery of the proton in 1919 through the nuclear reaction: ¹⁴N + α particle → ¹⁷O + proton. Eugen Goldstein earlier observed canal rays (positive rays) which were later identified as protons by Rutherford. Thomson discovered electron, Chadwick neutron. So Rutherford is the accepted discoverer.

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