TNPSC CCSE IV Exam | Question Papers with Answers for All Competitive Examination

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Tag: 2017 Tamil nadu | Group 2 Police Constables Exam General knowledge questions and answers

2017 Tamil nadu | Group 2 Police Constables, Jail Warders, Firemen Exam General knowledge questions and answers-2018-2019-2020

1. Phenomenon of radioactivity was discovered by? Answer: Henry Becquerel 2. Artificial Radioactivity was discovered by? Answer: Irene Curie and Frederic Curie 3. The time required for a radioactive isotope to disintegrate itself to half its initial mass? Answer: Half life period Study Materials Books Download, Admit card download, Aptitude tricks Download, Computer Questions and […]

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