This quiz works best with JavaScript enabled. Home > Science > Physics > Nuclear Science – Quiz 6 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Nuclear Science Quiz 6 (20 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which of the following is a radioactive substance used to generate electricity? A) Uranium-235. B) Carbon-12. C) Sodium-23. D) Helium-4. Show Answer Correct Answer: A) Uranium-235. 2. Process by which energy is released in sun is A) Fusion. B) Fission. C) Radioactivity. D) Haber's process. Show Answer Correct Answer: A) Fusion. 3. What makes nucleus unstable? A) The competition between the repulsive electric forces and the attractive strong nuclear force. B) The electrons in its atom. C) The force of attraction for other atoms close to it. D) None of above. Show Answer Correct Answer: A) The competition between the repulsive electric forces and the attractive strong nuclear force. 4. Enrichment of uranium is done to increase the concentration of ..... in the natural uranium. A) U-233. B) U-235. C) U-238. D) Pu-239. Show Answer Correct Answer: B) U-235. 5. Reaction involving the nucleus A) Electron. B) Nuclear Reaction. C) Potential Energy. D) Kinetic Energy. Show Answer Correct Answer: B) Nuclear Reaction. 6. What can you conclude about carbon-14 from its name? A) It has 14 electrons. B) It has 14 neutrons. C) It has 14 protons. D) It has an atomic mass of 14. Show Answer Correct Answer: D) It has an atomic mass of 14. 7. Activity of one decay per second is equal to A) 1 Bq. B) 1 Cd. C) 1 atm. D) 1 mol. Show Answer Correct Answer: A) 1 Bq. 8. Which of the following is true about fusion? A) Fusion happens in atomic bombs. B) Fusion produces radioactive waste. C) Fusion happens on the sun and stars. D) Fusion happens at nuclear power plants. Show Answer Correct Answer: C) Fusion happens on the sun and stars. 9. Specific gravity of uranium and plutonium is about A) 9. B) 13. C) 19. D) 27. Show Answer Correct Answer: C) 19. 10. When nucleus undergoes ..... decay. A) Alpha. B) Beta. C) Both a & b. D) Gamma. Show Answer Correct Answer: C) Both a & b. 11. A disadvantage of nuclear energy is that ..... A) It can become a toxic cake. B) It can take years to eliminate nuclear waste's radioactivity and waste. C) It can't be used to achieve desired results. D) It emits greenhouse gases. Show Answer Correct Answer: B) It can take years to eliminate nuclear waste's radioactivity and waste. 12. The ratio of neutrons to protons of an element having a mass number and atomic number of 80 and 40 respectively is A) 1. B) 2. C) 3. D) 4. Show Answer Correct Answer: A) 1. 13. Heat is generated in a nuclear reactor (thermal) by A) Fusion of atoms of uranium. B) Fission of U-235 by neutrons. C) Absorption of neutrons in uranium atoms. D) Combustion of a nuclear fuel e.g. uranium. Show Answer Correct Answer: B) Fission of U-235 by neutrons. 14. What causes nuclear fission A) Its caused when protons and neutrons are combined. B) It is caused when two atoms are combined and releases ennergy. C) Its caused when an atom splits into two atoms and releases energy. D) It is caused when protons and neutrons split. Show Answer Correct Answer: C) Its caused when an atom splits into two atoms and releases energy. 15. Uranium ore is currently mined & concentrated at A) Khetri. B) Alwaye. C) Ghatsila. D) Jadugoda. Show Answer Correct Answer: D) Jadugoda. 16. What is the source of energy used in nuclear reactor? A) Plutonium. B) Strontium. C) Barium. D) Uranium. Show Answer Correct Answer: D) Uranium. 17. Which of the following statements is correct concerning a radioactive substance? A) An element with stable atoms. B) An element with unstable nucleus atoms. C) An element with moving atoms. D) An element with closely arranged atoms. Show Answer Correct Answer: B) An element with unstable nucleus atoms. 18. Which of the following ores contains maximum percentage of uranium? A) Thorium. B) Rescolite. C) Carnotite. D) Pitchblende. Show Answer Correct Answer: D) Pitchblende. 19. Which is NOT true of a nuclear power plant? A) The waste remains radioactive for thousands of years. B) A small amount of uranium creates a lot of energy. C) Nuclear power plants use fusion. D) A chain reaction begins with an extra neutron. Show Answer Correct Answer: C) Nuclear power plants use fusion. 20. How can radioactivity be useful? A) It can be used to microwave food. B) It can be used in cancer treatments and pacemakers. C) It can be used to create helpful gamma rays. D) It can be used to create radioactive waste. Show Answer Correct Answer: B) It can be used in cancer treatments and pacemakers. ← PreviousNext →Related QuizzesScience QuizzesNuclear Science Quiz 1Nuclear Science Quiz 2Nuclear Science Quiz 3Nuclear Science Quiz 4Nuclear Science Quiz 5Nuclear Science Quiz 7Nuclear Science Quiz 8Nuclear Science Quiz 9Nuclear Science Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books