This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Physics > Nuclear Science – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Nuclear Science Quiz 1 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Chernobyl and Three Mile Island are all examples of ..... A) Power plant accidents. B) Famous nuclear bombs. C) Military bases. D) Present-day nuclear power plants. Show Answer Correct Answer: A) Power plant accidents. 2. All of the following are advantages of using nuclear power EXCEPT A) They do not contribute to the process of global warming. B) They produce more energy per gram of fuel. C) They produce no air pollution. D) They are less expensive to build and operate than coal-burning power plants. Show Answer Correct Answer: D) They are less expensive to build and operate than coal-burning power plants. 3. Nuclear power is ..... thermal power. A) Costlier than. B) They cannot be related. C) Cheaper than. D) Equal in amount. Show Answer Correct Answer: C) Cheaper than. 4. Activity is proportional to number of A) Father nuclei. B) Undecayed nuclei. C) Decayed nuclei. D) Daughter nuclei. Show Answer Correct Answer: B) Undecayed nuclei. 5. Which of the following is a non-fissile material? A) Thorium-232. B) Uranium-235. C) Uranium-233. D) Plutonium-239. Show Answer Correct Answer: A) Thorium-232. 6. The type of radioactive ray that will penetrate farthest into a material is a(n) ..... It is the most dangerous radioactive ray because of this. A) Alpha. B) Beta. C) Gamma. D) All of the above. Show Answer Correct Answer: C) Gamma. 7. Fuel for a nuclear reactor (thermal) is A) Radium. B) Uranium. C) Plutonium. D) None of these. Show Answer Correct Answer: B) Uranium. 8. "Critical mass" is the minimum mass of nuclear fissile material required for the A) Economic power generation. B) Sustainment of chain reaction. C) Power generation on commercial scale. D) None of these. Show Answer Correct Answer: B) Sustainment of chain reaction. 9. Nuclear energy is made from A) Hydrogen. B) Coal. C) Uranium or plutonium. D) Carbon. Show Answer Correct Answer: C) Uranium or plutonium. 10. Radioactive materials have unstable ..... A) Protons. B) Nuclei. C) Neutrons. D) Electrons. Show Answer Correct Answer: B) Nuclei. 11. Nuclear fusion reactions ..... A) Occurs in power plant. B) Occurs in the cores of sun and other stars. C) Occurs in the cores of Earth and other planets. D) None of above. Show Answer Correct Answer: B) Occurs in the cores of sun and other stars. 12. Energy is stored in the ..... of an atom. A) Nucleus. B) Electron cloud. C) Proton. D) Neutron. Show Answer Correct Answer: A) Nucleus. 13. The atomic mass unit is ..... A) U. B) G. C) M. D) None of above. Show Answer Correct Answer: A) U. 14. Proton and neutron combine which gives A) Nucleus. B) Nuclei. C) Nucleon. D) None of the above. Show Answer Correct Answer: C) Nucleon. 15. The attractive forces between nucleons are A) Low range. B) Short range. C) Min range. D) Maximum range. Show Answer Correct Answer: B) Short range. 16. What is used for fuel in a nuclear reactor? A) Cadmium. B) Uranium. C) Petroleum. D) None of above. Show Answer Correct Answer: B) Uranium. 17. The decay product of tritium (a beta emitter) is A) Lithium. B) Hydrogen. C) Deuterium. D) Helium. Show Answer Correct Answer: C) Deuterium. 18. A helium nucleus with two protons and two neutrons is called a(n) ..... A) Alpha particle. B) Gamma ray. C) Beta particle. D) Electroscope. Show Answer Correct Answer: A) Alpha particle. 19. The strong nuclear force ..... A) Is always attractive. B) Is always repulsive. C) Can be both. D) None of above. Show Answer Correct Answer: A) Is always attractive. 20. One advantage to using nuclear power is A) The expense of constructing nuclear reactors. B) The threat of an accident. C) The process of correctly disposing of the waste. D) It produces no air pollution. Show Answer Correct Answer: D) It produces no air pollution. 21. The energy released by the decay of one U-235 atom will be of the order of A) 100 MeV. B) 10000 MeV. C) 10 MeV. D) 1000 MeV. Show Answer Correct Answer: A) 100 MeV. 22. Another advantage of nuclear energy is that ..... A) It reduces energy generated from fossil fuels. B) It can produce gases that produce endorphins. C) It can be made into a delicious cake. D) It can be used to create beverages that make you grow taller. Show Answer Correct Answer: A) It reduces energy generated from fossil fuels. 23. Which of the following may not need a control rod? A) Candu reactor. B) Fast breeder reactor. C) Liquid metal cooled reactor. D) None of these. Show Answer Correct Answer: D) None of these. 24. The most penetrating type of radiation is the ..... A) Uranium. B) Alpha particle. C) Beta particle. D) Gamma ray. Show Answer Correct Answer: D) Gamma ray. 25. The initial energy of about electron A) 50 to 80 MeV. B) 5 to 80 MeV. C) 5 to 80 keV. D) 50 to 80 keV. Show Answer Correct Answer: A) 50 to 80 MeV. 26. Which particle is the least strong A) Alpha. B) Gamma. C) Beta. D) None of above. Show Answer Correct Answer: A) Alpha. 27. Nuclear power plants use ..... as fuel. A) Krypton. B) Hydrogen. C) Uranium. D) Barium. Show Answer Correct Answer: C) Uranium. 28. Which of these is used as moderator in nuclear reactor A) Uraphite. B) Helium gas. C) Heavy water. D) All of the above. Show Answer Correct Answer: D) All of the above. 29. Most stable isotope in nature is of A) Uranium-238. B) Uranium-235. C) Iron-56. D) Carbon-12. Show Answer Correct Answer: C) Iron-56. 30. The decrease in the atomic number is not observed in case of A) Electron capture. B) $\alpha$-emission. C) $\beta$-emission. D) Positron emission. Show Answer Correct Answer: C) $\beta$-emission. 31. One disadvantage of nuclear energy is ..... A) It emits large amounts of pollution into the atmosphere. B) There are no disadvantages. C) It leaves behind radioactive waste. D) It is a fossil fuel. Show Answer Correct Answer: C) It leaves behind radioactive waste. 32. Which of the following is a short term effect of radioactive radiation on humans? A) Nausea and vomitting. B) Mutation. C) Cancer. D) Foetus defect. Show Answer Correct Answer: A) Nausea and vomitting. 33. A moderator ..... the neutrons. A) Reflects. B) Slows down. C) Absorbs. D) Accelerates. Show Answer Correct Answer: B) Slows down. 34. Nuclear fusion reactions generate the energy released by A) The sun. B) Nuclear reactor. C) Electricity. D) None of above. Show Answer Correct Answer: A) The sun. 35. ..... Is the attractive force that holds a nucleus together A) Electromagnetic force. B) Strong nuclear force. C) Atomic force. D) None of above. Show Answer Correct Answer: B) Strong nuclear force. 36. Uranium is found in A) Xrays. B) Rocks in the ground. C) The sun. D) Hydrogen. Show Answer Correct Answer: B) Rocks in the ground. 37. Which of the following is not a naturally occurring nuclear fuel? A) Uranium-238. B) Thorium-233. C) Plutonium-239. D) None of these. Show Answer Correct Answer: C) Plutonium-239. 38. Which particle is most harmful to a human A) Beta. B) Gamma. C) Alpha. D) None of above. Show Answer Correct Answer: B) Gamma. 39. Fast breeder nuclear reactors using enriched uranium as fuel may contain upto a maximum of ..... percent of U-235 (i.e. fissile material). A) 85. B) 45. C) 15. D) 65. Show Answer Correct Answer: A) 85. 40. Nucleus atom is made up of A) Protons and neutrons. B) Protons and electrons. C) Neutrons and electrons. D) None of above. Show Answer Correct Answer: A) Protons and neutrons. 41. Extraction of uranium from its ore is done using ..... methods. A) Chemical. B) Pyrometallurgical. C) Electrometallurgical. D) Physical beneficiation. Show Answer Correct Answer: A) Chemical. 42. ..... is the splitting of an atom's nucleus into two smaller nuclei A) Nuclear fusion. B) Nuclear fission. C) Nuclear fuse. D) None of above. Show Answer Correct Answer: B) Nuclear fission. 43. ..... Place the following events in sequence:A) Uranium atoms split; B) Steam powers turbines; C) Fuel rods heat up A) A, C, B. B) C, A, B. C) B, A, C. D) A. A, B, C. Show Answer Correct Answer: A) A, C, B. 44. Thorium can be converted into U-233 in a ..... reactor. A) Liquid metal cooled. B) Swimming pool. C) Thermal. D) Fast breeder. Show Answer Correct Answer: D) Fast breeder. 45. The amount of a radioactive material (having a half life of 100 years) remaining after 400 years will be ..... of its original weight. A) 1/4. B) 1/16. C) 1/2. D) 1/8. Show Answer Correct Answer: B) 1/16. 46. A fast breeder reactor employs A) U-235 as fuel. B) Graphite as moderator. C) Water as coolant. D) Molten sodium as coolant as well as moderator. Show Answer Correct Answer: A) U-235 as fuel. 47. Chernobyl, Three Mile Island and Fukushima were all places where A) Nuclear accidents occured. B) Carbon emissions are bad. C) Successful coal mining occurs. D) Nuclear plants are operating. Show Answer Correct Answer: A) Nuclear accidents occured. 48. Which of the following is not used as a nuclear fuel cladding material? A) Ceramics. B) Zircalloy. C) Cadmium. D) Stainless steel. Show Answer Correct Answer: C) Cadmium. 49. In gamma emission, change in nucleon number is A) Increase by 1. B) Definite. C) Decreases by 1. D) Zero. Show Answer Correct Answer: D) Zero. 50. What is coming out of the tops of the cooling towers of a nuclear power plant? A) Hydrogen oxide. B) Pollution. C) Water vapor. D) Carbon dioxide. Show Answer Correct Answer: C) Water vapor. 51. Why should people get involved in the nuclear energy debate? A) Nuclear energy effects generations to come. B) Nuclear energy has more positive aspects than negatives. C) Nuclear energy's radioactive waste is such a huge problem. D) Congress needs something to do for public policy. Show Answer Correct Answer: A) Nuclear energy effects generations to come. 52. One important issue with nuclear energy is the fear of A) Nuclear contamination. B) Not enough energy production. C) Rising prices. D) Carbon emissions. Show Answer Correct Answer: A) Nuclear contamination. 53. Which of the following types of nuclear reactors is most prone to radioactive hazards? A) Molten sodium cooled reactor. B) Gas cooled reactor. C) Boiling water reactor. D) Pressurised water reactor. Show Answer Correct Answer: C) Boiling water reactor. 54. ..... moderator is used in a fast breeder reactor. A) Graphite. B) Heavy water. C) Beryllium. D) No. Show Answer Correct Answer: D) No. 55. Nucleus gives off Beta particles when it ..... A) Emits helium nucleus. B) Emits photons. C) Emits electrons. D) None of above. Show Answer Correct Answer: C) Emits electrons. 56. Candu reactor is a ..... nuclear reactor. A) Highly enriched uranium (85 % U-235) fuelled. B) Natural uranium fuelled heavy water cooled & moderated. C) Fast breeder. D) Homogeneous. Show Answer Correct Answer: B) Natural uranium fuelled heavy water cooled & moderated. 57. At higher energy, bodies have A) Zero mass. B) Small mass. C) Large mass. D) Smaller weight. Show Answer Correct Answer: C) Large mass. 58. A negative effect of nuclear fusion is ..... A) Air pollution. B) Greenhouse gases. C) Radioactive waste. D) Hard to produce due to extremely high temp/pressure requirements. Show Answer Correct Answer: D) Hard to produce due to extremely high temp/pressure requirements. 59. Fusion produces ..... nuclei. A) Same-sized. B) Smaller. C) Larger. D) All of the above. Show Answer Correct Answer: C) Larger. 60. The mass number of an element is not changed, when it emits ..... radiations. A) $\alpha$ & $\beta$. B) $\beta$ & $\gamma$. C) $\alpha$, $\beta$, & $\gamma$. D) $\gamma$ & $\alpha$. Show Answer Correct Answer: B) $\beta$ & $\gamma$. Next →Related QuizzesScience QuizzesGeneral Knowledge QuizzesNuclear Science Quiz 2Nuclear Science Quiz 3Nuclear Science Quiz 4Nuclear Science Quiz 5Physics QuizSolar System QuizThe Universe Quiz 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books