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Nuclear Science Quiz 3 (60 MCQs)

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1. Thermal nuclear reactors using enriched uranium as fuel contains a maximum of ..... percent fissile material i.e. U-235.
2. The process that creates the energy in a nuclear reaction is called .....
3. Time taken by a radioactive substance to decay half is called
4. The average life time of all the nuclei
5. The storage method used for radioactive wastes generated from fission nuclear reactors must be designed to last for how long?
6. Which of the following nuclear materials is fissile?
7. Gas cooling as compared to water cooling of nuclear reactors
8. Energy from deep within the Earth is called ..... energy.
9. The Satellite launching centre of Indian Space Research Organization is in
10. Negatively charged particles emitted from a nucleus at a high speed are .....
11. What are the two types of nuclear reactions?
12. Nuclear power plant in Karnataka is located at
13. Which of the following is NOT true of nuclear fission?
14. Which of these is used as the fuel in a Nuclear Power station?
15. Critical energy should be ..... the neutron binding energy of the atom in order to initiate a nuclear fission.
16. Atoms with same number of neutrons, but different number of nucleons are called
17. Below are the factors that need to be considered before using nuclear energy this alternative source of energy, except
18. What is a benefit of nuclear fission?
19. Minimum energy required to pull nucleus apart is called
20. The function of moderators in nuclear reactor is to
21. Nuclear Power uses ..... to create energy
22. What is the Half-Life of Carbon 14
23. Atoms of U-238 and U-235 differ in structure by three
24. Unit of radioactivity is
25. The time required for half of the ..... of a radioactive isotope to decay is called its half life.
26. What type of radiation has a negligible mass and consists of high energy radiation?
27. Pick out the wrong statement.
28. Protons and Neutrons are called .....
29. ..... nuclear reactor does not require a heat exchanger to supply steam to power turbine.
30. Which is the most commonly used molten metal for cooling of nuclear reactors?
31. Emission of $\beta$-particles during radioactive decay of a substance is from
32. Which of the following may not need a moderator?
33. The second underground nuclear test was conducted by India at
34. Which of the following terms best describes the byproducts of nuclear power?
35. Geiger's law can be expressed in the form
36. An electron has a mass that is approximately ..... that of the proton.
37. Finish the equation22688Ra $\rightarrow$ ..... + 22688Ra
38. Which Uranium isotope is used in nuclear power plants to produce electricity?
39. Which is an advantage of installing solar panels?
40. The half life period of a radioactive element is 100 days. After 400 days, one gm of the element will be reduced to ..... gm.
41. If nucleus is formed from separate nucleons, then energy is
42. What happens to the isotope astatine-210 when it interacts with a beta particle (you have 3 minutes use periodic table)
43. The function of heavy water in a nuclear reactor is to
44. In a nuclear reactor, which part converts nuclear energy to heat energy?
45. What does it mean when an element is radioactive?
46. A radioactive isotope undergoes decay with respect to time following ..... law.
47. Energy given to nucleus to dismantle it increases the
48. In nuclear fusion, smaller atoms are forced together to create larger atoms. Does this process release, absorb or maintain energy?
49. Wich material is suitable to be made into containers for radioactive substances?
50. Nuclear fusion reaction occurs in the
51. Which process is used by nuclear power plants to produce low cost, long lasting energy?
52. A fertile material is the one, which can be
53. Where, in 1986, did a fission nuclear power plant have an explosion that lead to over 1600 contracting cancer from the resulting radiation?
54. The Chernobyl nuclear disaster occurred in a power plant at Ukraine was in
55. Thermal shield is used in high powered nuclear reactors to
56. The radioactivity ideas given by
57. Carbon isotopes has a half life of ..... Years
58. Which of the following terms best describes the other product besides energy of nuclear power?
59. Finish this equation20983Bi$\rightarrow$ ..... + 20581Tl
60. The time taken for a radioactive element to reduce to 50 % of its original weight is ..... years, if its half life period is 12 years.
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