Who was the first to propose a model for the structure of an atom?

उत्तर: (D) J.J. Thomson

• (A) चूक

  Wrong: he discovered canal rays, not an atomic model.

• (B) चूक

  Wrong: his nuclear model (1911) came after Thomson's.

• (C) चूक

  Wrong: his model (1913) came later.

• (D) बरोबर

  Correct: Thomson proposed the first model ('plum pudding', 1904).