Q. The monazite sands on the Kerala coasts, used for generating nuclear energy contain ______:
Answer: Uranium
Notes: The monazite Sands of Kerala are rich for earth metals,thorium ,lanthanum and cerium. Because of the presence of thorium within monazite, it can be radioactive. Due to the alpha decay of thorium and uranium, monazite contains significant amount of helium, which can be extracted by heating.

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