This quiz works best with JavaScript enabled. Home > General Knowledge > Science > Physics > Nuclear Science – Quiz 2 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Nuclear Science Quiz 2 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Nuclear fusion naturally occurs in? A) The sun and stars. B) Uranium-235. C) Nuclear Power Plant. D) Earth's Core. Show Answer Correct Answer: A) The sun and stars. 2. Nuclear energy creates A) A large amount of energy. B) A small amount of energy. C) A medium amount of energy. D) None of above. Show Answer Correct Answer: A) A large amount of energy. 3. The energy resource that is most affected by change in weather is .....? A) Wind. B) Natural gas. C) Nuclear. D) Geothermal. Show Answer Correct Answer: A) Wind. 4. Percentage of natural uranium present in uranium ore found in Jadugoda (Jharkhand) is A) 12. B) 3. C) 0.1. D) 1. Show Answer Correct Answer: C) 0.1. 5. Which subatomic particle is required to start a nuclear fission chain reaction? A) Atom. B) Electron. C) Proton. D) Neutron. Show Answer Correct Answer: D) Neutron. 6. Uranium pellets are an example of ..... energy. A) Electrical. B) Radiant. C) Chemical. D) Mechanical. Show Answer Correct Answer: C) Chemical. 7. Coolant present in the primary circuit of a pressurised water reactor is high pressure A) Saturated water. B) Superheated steam. C) Saturated steam. D) Sub cooled water. Show Answer Correct Answer: A) Saturated water. 8. Function of control rod in a nuclear reactor is to control A) Pressure. B) Fuel consumption. C) Absorption of neutrons. D) Temperature. Show Answer Correct Answer: C) Absorption of neutrons. 9. An example of an uncontrolled fission reaction is ..... A) Atomic Bomb. B) Radio active decay. C) Nuclear power plants. D) On the surface of the sun. Show Answer Correct Answer: A) Atomic Bomb. 10. Classical physics fails to explain the theory of ..... A) Alpha decay. B) Beta decay. C) Gamow decay. D) None of the above. Show Answer Correct Answer: A) Alpha decay. 11. The carbon isotope ..... is present in all living beings. A) C12. B) C13. C) C14. D) C15. Show Answer Correct Answer: C) C14. 12. The type of radioactive particle that can be stopped by a sheet of paper is the ..... A) Alpha particle. B) Beta particle. C) Gamma ray. D) Uranium. Show Answer Correct Answer: A) Alpha particle. 13. Nuclear fission is used to ..... A) Filter water. B) Cool water. C) Generate electricity. D) None of above. Show Answer Correct Answer: C) Generate electricity. 14. Radioactive dating ..... A) Is a way to find out how old something is. B) Is a way to find out the structure of living organisms. C) Is a way to find out the chemical reactions in plants. D) None of above. Show Answer Correct Answer: A) Is a way to find out how old something is. 15. Which is TRUE about nuclear waste? A) We use the waste for making bombs and there is no waste. B) We have no safe place to dispose of waste. C) We burn the waste. D) We dispose of the waste in the ocean. Show Answer Correct Answer: B) We have no safe place to dispose of waste. 16. What does nuclear reaction mean A) The changed caused by energy in an atom. B) A change in the number of protons or neutrons in an atom. C) The reaction of protons and neutrons being combined. D) A change in the identity or characteristics of a nucleus. Show Answer Correct Answer: D) A change in the identity or characteristics of a nucleus. 17. What is a beneficial aspect of nuclear fission? A) The ability to absorb energy. B) The ability to produce more energy than nuclear fusion. C) There are no beneficial aspects of nuclear fission. D) The ability to release tremendous amounts of energy. Show Answer Correct Answer: D) The ability to release tremendous amounts of energy. 18. Fusion changes hydrogen into what? A) U-235. B) Helium. C) U-238. D) Uranium. Show Answer Correct Answer: B) Helium. 19. What type of decay is shown here23892U $\rightarrow$ 23490Th + 42He. A) Alpha. B) Beta. C) Gamma. D) None of above. Show Answer Correct Answer: A) Alpha. 20. Which of the following is NOT a nuclear accident that occurred at a power plant? A) Chernobyl. B) Fukushima. C) Three Mile Island. D) Hiroshima. Show Answer Correct Answer: D) Hiroshima. 21. The main ore of uranium is A) Cassiterite. B) Chalcopyrite. C) Pitchblende. D) Monazite sand. Show Answer Correct Answer: C) Pitchblende. 22. The atomic weight and atomic number of an element are A and Z respectively. What is the number of neutrons in the atom of that element? A) A. B) A- Z. C) Z. D) A+Z. Show Answer Correct Answer: B) A- Z. 23. Thorium-232 is converted into uranium-233 in a/an ..... nuclear reactor. A) Heavy water moderated. B) Fast breeder. C) Thermal. D) Enriched uranium. Show Answer Correct Answer: B) Fast breeder. 24. K.E of the ejected electron A) Ee-W. B) Ea-a. C) Eb-b. D) Ec-W. Show Answer Correct Answer: C) Eb-b. 25. Which process leads to a more stable nucleus because it ADDS on to it? A) Endothermic reactions. B) Fusion. C) Atomic bomb. D) Fission. Show Answer Correct Answer: B) Fusion. 26. If 4 gm of a radioisotope has a half life period of 10 days, the half life of 2 gm of the same istotope will be ..... days. A) 40. B) 30. C) 10. D) 20. Show Answer Correct Answer: C) 10. 27. Which is a fertile nuclear fuel? A) Pu-239. B) Th-232. C) U-235. D) U-233. Show Answer Correct Answer: B) Th-232. 28. Which of the following is an adverse effect of the generation of nuclear energy? A) Produces toxic gases. B) More expensive compared to fossil fuels. C) Produces a lot of soot and dust. D) Produces hazardous radioactive wastes. Show Answer Correct Answer: D) Produces hazardous radioactive wastes. 29. Nuclear fuel complex, Hyderabad is engaged in the job of A) Treatment of spent fuel. B) Processing of uranium ore. C) Manufacture of nuclear fuel elements/assemblies . D) None of these. Show Answer Correct Answer: C) Manufacture of nuclear fuel elements/assemblies . 30. What is a disadvantage to Hydroelectricity? A) Lots and lots of pollution. B) Kills wild bird population. C) Radioactive waste. D) Increases potential for flooding. Show Answer Correct Answer: D) Increases potential for flooding. 31. The main ore of thorium is A) Galena. B) Limonite. C) Pitchblende. D) Monazite sand. Show Answer Correct Answer: D) Monazite sand. 32. Where does fusion occur naturally? A) Underwater. B) All around us. C) In the radioactive waste. D) On the sun. Show Answer Correct Answer: D) On the sun. 33. On the periodic table, how is atomic mass represented? A) As an average of the mass of different isotopes. B) As the exact mass of every atom. C) As the mass of the most common isotope. D) As the masses of all the protons added together. Show Answer Correct Answer: A) As an average of the mass of different isotopes. 34. What would two different isotopes of an atom have in common? A) Number of protons. B) Atomic mass. C) Number of neutrons. D) Atomic weight. Show Answer Correct Answer: A) Number of protons. 35. Which of the following is a CON about nuclear energy? A) It may cause hazardous accidents. B) It enables some countries to make atomic weapons. C) Both of these are true. D) None of above. Show Answer Correct Answer: C) Both of these are true. 36. ..... have the same mass number, but different nuclear charge. A) Isobars. B) Isotopes. C) Isotones. D) None of these. Show Answer Correct Answer: A) Isobars. 37. Which atom is mostly likely used during nuclear fusion? A) Boron. B) Hydrogen. C) Oxygen. D) Calcium. Show Answer Correct Answer: B) Hydrogen. 38. During beta decay, a nucleus ..... A) Gives up two protons and two neutrons. B) Maintains the same number of protons and neutrons. C) Loses a proton and gains a neutron. D) Gains a proton and loses a neutron. Show Answer Correct Answer: D) Gains a proton and loses a neutron. 39. Which of the following is a radioactive substance used to generate electricity? A) Sodium-23. B) Uranium-235. C) Carbon-12. D) Helium-4. Show Answer Correct Answer: B) Uranium-235. 40. Process by which energy is released in sun is A) Radioactivity. B) Fission. C) Haber's process. D) Fusion. Show Answer Correct Answer: D) Fusion. 41. 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. 42. 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. 43. Reaction involving the nucleus A) Nuclear Reaction. B) Electron. C) Potential Energy. D) Kinetic Energy. Show Answer Correct Answer: A) Nuclear Reaction. 44. What can you conclude about carbon-14 from its name? A) It has an atomic mass of 14. B) It has 14 electrons. C) It has 14 protons. D) It has 14 neutrons. Show Answer Correct Answer: A) It has an atomic mass of 14. 45. Activity of one decay per second is equal to A) 1 atm. B) 1 Bq. C) 1 Cd. D) 1 mol. Show Answer Correct Answer: B) 1 Bq. 46. 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. 47. Specific gravity of uranium and plutonium is about A) 9. B) 19. C) 27. D) 13. Show Answer Correct Answer: B) 19. 48. When nucleus undergoes ..... decay. A) Alpha. B) Beta. C) Both a & b. D) Gamma. Show Answer Correct Answer: C) Both a & b. 49. 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) 4. C) 2. D) 3. Show Answer Correct Answer: A) 1. 50. Heat is generated in a nuclear reactor (thermal) by A) Absorption of neutrons in uranium atoms. B) Combustion of a nuclear fuel e.g. uranium. C) Fission of U-235 by neutrons. D) Fusion of atoms of uranium. Show Answer Correct Answer: C) Fission of U-235 by neutrons. 51. 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. 52. Uranium ore is currently mined & concentrated at A) Jadugoda. B) Alwaye. C) Khetri. D) Ghatsila. Show Answer Correct Answer: A) Jadugoda. 53. What is the source of energy used in nuclear reactor? A) Strontium. B) Plutonium. C) Uranium. D) Barium. Show Answer Correct Answer: C) Uranium. 54. Which of the following statements is correct concerning a radioactive substance? A) An element with closely arranged atoms. B) An element with stable atoms. C) An element with moving atoms. D) An element with unstable nucleus atoms. Show Answer Correct Answer: D) An element with unstable nucleus atoms. 55. Which of the following ores contains maximum percentage of uranium? A) Rescolite. B) Carnotite. C) Pitchblende. D) Thorium. Show Answer Correct Answer: C) Pitchblende. 56. 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. 57. 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. 58. Nuclear power plants use ..... to create electricity. A) Fossil fuels. B) Hydrogen. C) Fusion. D) Fission. Show Answer Correct Answer: D) Fission. 59. Alternative sources of energy include ..... A) Solar Power. B) Wind Power. C) Hydropower. D) All of the above. Show Answer Correct Answer: D) All of the above. 60. Which process do hydrogen atoms use to make the Sun's energy? A) Nuclear fusion. B) Nuclear isotope. C) Nuclear fission. D) Nuclear meltdown. Show Answer Correct Answer: A) Nuclear fusion. ← PreviousNext →Related QuizzesScience QuizzesGeneral Knowledge QuizzesNuclear Science Quiz 1Nuclear Science Quiz 3Nuclear Science Quiz 4Nuclear Science Quiz 5Physics QuizSolar System QuizThe Universe Quiz 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books