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ICSE Class 10 Physics 2018 Paper

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The ore of Uranium found in nature contains 92U238{ }_{92} U^{238} and 92U235{ }_{92} U^{235}. Although both the isotopes are fissionable, it is found out experimentally that one of the two isotopes is more easily fissionable.
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Question : 72 of 78
Marks: +1, -0
Name the isotope of Uranium which is easily fissionable.
Solution:  
The isotope of Uranium which is easily fissionable is 92235U_{92}^{235}\mathrm{U} .
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