Assertion :High-level waste and spent fuel from a nuclear power plant must be handled and stored with care. Reason: Used fuel from a nuclear reactor is no longer efficient in creating electricity, because its fission process has slowed.

Both Assertion and Reason are correct and Reason is the correct explanation for Assertion

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Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion

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Assertion is correct but Reason is incorrect

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Both Assertion and Reason are incorrect

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Solution

The correct option is C Assertion is correct but Reason is incorrect
The nuclear power plant is very useful to generate clean electricity but it is a very hard and expensive method because of the use of radioactive elements like Uranium. After use of Uranium for electricity production, there is also a problem that comes across in waste disposal because it is also radioactive.
In a nuclear reactor, the fission of Uranium takes place is a fast chain reaction that emits a large amount of heat and used as electricity production.
So the correct answer is C, the assertion is correct but the reason is incorrect.

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