nuclear_fission_mcqs.pdf

Multiple Choice Questions on Nuclear Fission 1. What is nuclear fission? a) A process of combining light nuclei to form a heavier nucleus b) The process of splitting a heavy nucleus into two lighter nuclei c) The conversion of mass directly into energy d) The emission of alpha particles from a...

Multiple Choice Questions on Nuclear Fission 1. What is nuclear fission? a) A process of combining light nuclei to form a heavier nucleus b) The process of splitting a heavy nucleus into two lighter nuclei c) The conversion of mass directly into energy d) The emission of alpha particles from a radioactive substance Answer: b) The process of splitting a heavy nucleus into two lighter nuclei 2. Which of the following elements is commonly used as fuel in nuclear fission reactors? a) Hydrogen b) Uranium-235 c) Carbon d) Oxygen Answer: b) Uranium-235 3. During nuclear fission, what is released in addition to the two smaller nuclei? a) Electrons and gamma rays b) Neutrons and energy c) Protons and beta particles d) Alpha particles and light Answer: b) Neutrons and energy 4. Which of the following best describes the energy released during nuclear fission? a) It is the result of the conversion of mass into energy according to Einstein's equation, E=mc² b) It is due to the breakdown of chemical bonds c) It is generated from gravitational forces d) It occurs only in the outer electron shell of atoms Answer: a) It is the result of the conversion of mass into energy according to Einstein's equation, E=mc² 5. What role do neutrons play in a nuclear fission chain reaction? a) They slow down the reaction by absorbing energy b) They cause the fission of other nuclei, sustaining the reaction c) They convert into protons to maintain stability d) They are absorbed to stop the reaction Answer: b) They cause the fission of other nuclei, sustaining the reaction 6. Which of the following is an example of a material used as a moderator in nuclear reactors? a) Graphite b) Helium c) Lead d) Mercury Answer: a) Graphite 7. In a nuclear reactor, the purpose of control rods is to: a) Increase the speed of the fission reaction b) Absorb excess neutrons to regulate the chain reaction c) Act as a fuel source d) Remove heat from the reactor Answer: b) Absorb excess neutrons to regulate the chain reaction 8. Which of the following is a common by-product of nuclear fission in a reactor? a) Water vapor b) Plutonium c) Helium gas d) Methane Answer: b) Plutonium 9. What is a major challenge associated with nuclear fission as a source of energy? a) Its inability to produce large amounts of energy b) The release of greenhouse gases during the process c) The long-lived radioactive waste it generates d) The requirement of large amounts of fossil fuels Answer: c) The long-lived radioactive waste it generates 10. In which type of nuclear reaction does a chain reaction occur? a) Nuclear fusion b) Alpha decay c) Nuclear fission d) Beta decay Answer: c) Nuclear fission