Question:
_______ ionizing rays/particles have residual radioactivity that is why these are not used in food preservation.
_______ ionizing rays/particles have residual radioactivity that is why these are not used in food preservation.
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Only electromagnetic radiation (Gamma and X-rays) and high-energy electron beams (Beta) within regulated energy limits (e.g., \(5-10\text{ MeV}\)) are safe for food irradiation.
Updated On: Jul 10, 2026
- Alpha
- Protons
- Neutrons
- Beta
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept:
Food irradiation uses ionizing radiation to preserve food.
The energy levels must be controlled to prevent the food itself from becoming radioactive.
Step 2: Detailed Explanation:
Neutrons are heavy, uncharged particles with high penetration power.
When they collide with atomic nuclei in food, they can be captured, transforming stable elements into unstable, radioactive isotopes (induced radioactivity).
For this reason, neutron radiation is strictly prohibited in food preservation.
Gamma rays, X-rays, and beta particles (at regulated energy levels) do not have enough mass-energy potential to induce radioactivity in food.
Step 3: Final Answer:
Therefore, neutrons are not used in food preservation due to the risk of induced residual radioactivity.
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