Which radioactive pollutant has recently drawn the attention of public due to its occurrence in the building material?
(A) Thorium
(B) Radium
(C) Plutonium
(D) Radon
✅ Correct Answer: (D) Radon
Explanation:
- Radon is a radioactive noble gas that results from the decay of uranium and radium, commonly found in soil, rock, and building materials like concrete, granite, and bricks.
- It can accumulate indoors, especially in poorly ventilated spaces, and is a major health hazard due to its radioactive nature.
- Inhalation of radon and its decay products increases the risk of lung cancer.
Other options:
- Thorium and Radium are radioactive but not commonly found in building materials at hazardous levels.
- Plutonium is not typically present in building materials and is mostly found in nuclear facilities.
Hence, Radon is the pollutant of concern here.
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