Solved Important MCQ’s of 9th Chemistry Chapter 2
Solved Important MCQ’s of 9th Chemistry Chapter 2,Chemistry solved mcq’s for PPSC ,NTS exam 1). The word “Atom” is derived from which word Ans: Atomos 2).Who discovered proton Ans: Goldstein 3).In which year J.J.Thomson discovered electron Ans: 1897 4).Plum pudding theory was put forward by Ans: J.J.Thomson 5).Which cathod was used by Goldstein Ans: Perforated … Read more