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| Q. |
If all bullets could not be removed from gun shot injury of a man, it may cause poisoning by – |
| A. | Mercury |
| B. | Lead |
| C. | Iron |
| D. | Arsenic |
| Answer» B. Lead | |
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Explanation: Lead is used in building construction, lead-acid batteries, bullets and shot, weights, as part of solders, pewters, fusible alloys, and as a radiation shield. Lead has the highest atomic number of all of the stable elements, although the next higher element, bismuth, has a half-life that is so long (much longer than the age of the universe) that it can be considered stable. Its four stable isotopes have 82 protons, a magic number in the nuclear shell model of atomic nuclei. |
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