important MCQs Of Nuclear Chemistry – Multiple Choice QuestionsBy: Prof. Dr. Fazal Rehman | Last updated: May 23, 2025 12 Score: 0 Attempted: 0/12 Subscribe 1. : Which scientist discovered radioactivity? (A) J.J. Thomson (B) Madame Curie (C) Henry Becquerel (D) Rutherford 2. : Have same atomic numbers but different atomic masses (A) Isotope (B) Atom (C) Radioisotope (D) None of these 3. : When a radioactive substance is subjected to a vacuum, the rate of disintegration per second (A) Increases only if the products are gaseous (B) Increase considerably (C) Decreases (D) Is not affected 4. : Radioactive has an unstable nucleus and undergoes radioactive decay. (A) Isotope (B) Atom (C) Radioisotope (D) None of these 5. : Which one of the following are Gamma rays? (A) Low energy waves (B) High energy protons (C) High energy electron (D) High energy electromagnetic waves 6. : Which one of the following has no charge? (A) Gamma rays (B) Beta rays (C) Alpha rays (D) Cathode rays 7. : Which of the following is the smallest particle of an element that retains the properties of that element? (A) Isotope (B) Atom (C) Radioisotope (D) None of these 8. : Hydrogen bomb is based on the phenomenon of (A) Nuclear explosion (B) Chemical reaction (C) Nuclear fusion (D) Nuclear fission 9. : Which of the following does uranium give as a stable isotope? (A) Radon (B) Krypton (C) Polonium (D) Radium 10. : Penetrating power of proton is (A) Greater than electron (B) Lesser than electron (C) Greater than neutron (D) None 11. : The average life period of a radioactive element is (A) 1.44 T (B) 144 T (C) 0.144 T (D) 14.4 T 12. : A certain nuclide has a half-life period of 30 minutes. If a sample containing 600 atoms is allowed to decay for 90 minutes, how many atoms will remain? (A) 175 atoms (B) 250 atoms (C) 450 atoms (D) 75 atoms Related Posts:Nuclear Physics Multiple Choice QuestionsNuclear Physics important MCQs for admission test and job testMCQS Chemistry - Multiple choice questions - test - examNUCLEAR CHEMISTRY MCQsMCQs Of Nuclear Chemistry Biology Multiple choice questions Important