Question detail
Which of the following is NOT a recommended safety precaution when handling radioactive materials?
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. Using tongs to handle sources
- B. Wearing lead-lined gloves
- C. Standing very close to the source
- D. Using protective screens
Answer
The correct answer is C: Standing very close to the source.
Explanation
The correct answer is C: Standing very close to the source. This supports the learning objective "Describe safety precautions for handling radioactive sources, including reducing time, increasing distance and using shielding." 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: Using tongs to handle sources; Wearing lead-lined gloves; Using protective screens.
Common mistake
Safety Precautions Misunderstanding
Students often confuse the purpose of reducing time, increasing distance, and using shielding when handling radioactive sources, thinking they are interchangeable.
Emphasize that reducing time minimizes exposure duration, increasing distance reduces radiation intensity, and using shielding blocks radiation effectively. Each method serves a distinct purpose in radiation safety.
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