Higher Chemistry Unit 3 Section 6 Nuclear Chemistry Multiple Choice Questions This is designed to be used by teachers to help students develop skills in answering multiple choice questions. Douglas Racey, Waid Academy, Anstruther, Fife, Scotland

Higher Chemistry Unit 3 - Section 6 Nuclear Chemistry Multiple Choice Questions 1. 14C has a half-life of 5600 years. An analysis of charcoal from a wood fire shows that its 14C content is 25% that of living wood. How many years have passed since the wood for the fire was cut? A. 1 400 B. 4 200 C. 11 200 D. 16 800 C. Answer

Higher Chemistry Unit 3 - Section 6 Nuclear Chemistry Multiple Choice Questions 2. Radioactive uranium is present in rocks in the form of compounds like uranium(IV)oxide. When the rock is processed, a large amount of the uranium can be recovered as pure metal. Compared to the original rock, the half-life of the pure metal will be A. shorter B. the same C. longer D. depend upon the amount that is recovered B. Answer

D. 3. Induced nuclear reactions can be described in a shortened form Higher Chemistry Unit 3 - Section 6 Nuclear Chemistry Multiple Choice Questions 3. Induced nuclear reactions can be described in a shortened form T (x,y) P The participants are, the target nucleus (T), the bombarding particle (x), the ejected particle (y) and the product nucleus (P). Which nuclear reaction would not give the product nucleus indicated A. 236Np (p, a) 238U B. 242Cf (n, a) 239Pu C. 10B (a, n) 13N D. 14N (a, p) 17O D. Answer

Higher Chemistry Unit 3 - Section 6 Nuclear Chemistry Multiple Choice Questions 4. Which particle will be formed when an atom of 211Bi loses an alpha particle and the decay product then loses a beta particle? A. 210Au B. 209Hg C. 208Tl D. 207Pb D. Answer

Higher Chemistry Unit 3 - Section 6 Nuclear Chemistry Multiple Choice Questions 5. The half-life of the isotope 210Pb is 21 years. What fraction of the original 210Pb atoms will be present in 63 years? A. 0.5 B. 0.25 C. 0.125 D. 0.0625 C. Answer

C. 6. Strontium-90 is a radioisotope. Higher Chemistry Unit 3 - Section 6 Nuclear Chemistry Multiple Choice Questions 6. Strontium-90 is a radioisotope. What is the neutron to proton ratio in an atom of this isotope? A. 0.73 B. 1.00 C. 1.37 D. 2.37 C. Answer

B. 7. A radioisotope of thorium forms protactinium-231 Higher Chemistry Unit 3 - Section 6 Nuclear Chemistry Multiple Choice Questions 7. A radioisotope of thorium forms protactinium-231 by beta-emission. What is the mass number of the radioisotope of thorium? A. 230 B. 231 C. 232 D. 235 B. Answer

B. 8. Phosphorus-32 is made by neutron capture for use Higher Chemistry Unit 3 - Section 6 Nuclear Chemistry Multiple Choice Questions 8. Phosphorus-32 is made by neutron capture for use as a tracer in phosphate fertilser. From which of the following ioisotopes is phosphorus-32 made by neutron capture? A. B. C. D. B. Answer

D. 9. The above process represents A. nuclear fission Higher Chemistry Unit 3 - Section 6 Nuclear Chemistry Multiple Choice Questions 9. The above process represents A. nuclear fission B. proton capture C. neutron capture D. nuclear fusion D. Answer

Higher Chemistry Unit 3 - Section 6 Nuclear Chemistry Multiple Choice Questions 10. Two one gram samples of radium and radium oxide both contain the same radioisotope of radium. The intensity and half life of the radioisotope are compared. Which line below gives the correct comparison? Intensity of radiation Half-life A. same different B. same same C. different same D. different different C. Answer