Question detail
Which type of radiation is emitted as a high-speed electron from the nucleus? Use the random decay context to keep Radioactive contamination distinct from nearby atomic and nuclear radiation ideas.
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. Alpha radiation (radioactive contamination 27)
- B. Beta radiation (radioactive contamination 27)
- C. Gamma radiation (radioactive contamination 27)
- D. Neutron radiation (radioactive contamination 27)
Answer
The correct answer is Beta radiation (radioactive contamination 27).
Explanation
The correct answer is Beta radiation (radioactive contamination 27). It directly supports the learning objective: Compare the hazards of alpha, beta and gamma radiation outside the body.. In Radioactive contamination, this is the best option because it matches the specific random decay context; the other options mix up nearby ideas such as activity, count rate, isotope notation, radiation type, or nuclear-equation changes.
Common mistake
Misunderstanding Radiation Hazards
Students often confuse the hazards of alpha, beta, and gamma radiation, thinking they are equally dangerous outside the body.
To fix this, students should study the penetration abilities and ionising powers of each type of radiation, noting that alpha radiation is the least penetrating and gamma radiation is the most penetrating, which affects their relative hazards.
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