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Wastes may be sealed in concrete-filled ...

Wastes may be sealed in concrete-filled drums and discharged to a depth of about 500 m. This specific statement is true for

A

Radiation pollutants

B

U.V. radiation pollutants

C

Particle pollutants

D

All radioactive pollutants

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To solve the question regarding the disposal of waste sealed in concrete-filled drums and discharged to a depth of about 500 meters, we can follow these steps: ### Step-by-Step Solution: 1. **Understanding the Context**: - The question refers to a specific method of waste disposal involving sealing waste in concrete-filled drums and burying them deep underground. 2. **Identifying the Type of Waste**: - The waste in question is likely to be hazardous due to its radioactive nature. This is commonly associated with nuclear research, nuclear power plants, or nuclear weapon processing. 3. **Recognizing the Risks**: - Radioactive waste emits radiation, which can be harmful to living organisms. This radiation can cause genetic mutations, unusual disorders, and diseases, including cancer. 4. **Disposal Method**: - To mitigate the risks associated with radioactive waste, it is suggested to seal the waste in concrete-filled drums. This helps contain the radiation and prevents it from affecting the environment and living organisms. 5. **Depth of Disposal**: - The drums are to be buried at a depth of about 500 meters. This depth is significant enough to ensure that radiation does not reach the surface, thereby protecting biological life. 6. **Conclusion**: - Based on the above points, the specific statement about sealing waste in concrete-filled drums and discharging it to a depth of 500 meters is true for **radioactive pollutants**. ### Final Answer: The statement is true for **all radioactive pollutants**. ---
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