Question 1
Question detail
What safety precautions should be taken when handling radioactive sources?
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
MCQ
Type
practice
Style
Topic
Atoms and nuclear radiation
Question
- A. Reduce time of exposure, increase distance, and use shielding
- B. Increase time of exposure, decrease distance, and avoid shielding
- C. Only wear gloves
- D. Use only lead containers
Answer
The correct answer is A: Reduce time of exposure, increase distance, and use shielding.
Explanation
The correct answer is A: Reduce time of exposure, increase distance, and use shielding. This supports the learning objective "Define radioactive contamination as the unwanted presence of radioactive atoms on or inside an object or person." in Radioactive contamination because it uses the correct atomic and nuclear radiation relationship for Atoms and nuclear radiation. The other options are less suitable because they do not match the required Radioactive contamination idea: Increase time of exposure, decrease distance, and avoid shielding; Only wear gloves; Use only lead containers.
Common mistake
Confusing Contamination with Irradiation
Students often confuse radioactive contamination with irradiation, thinking that both terms mean the same thing.
Remember that contamination refers to the unwanted presence of radioactive atoms on or inside an object or person, while irradiation is simply exposure to ionising radiation from a radioactive source.
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