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What are the methods of treatment & disposal of radioactive wastes ? | |
A. | Evaporation & chemical precipitation. [Wrong Answer] |
B. | Biological methods & adsorption in ion exchange materials. [Wrong Answer] |
C. | Fixing into a solid mass with cement and sinking deep in the sea. [Wrong Answer] |
D. | All (a), (b) & (c). [Correct Answer] |