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Question

When was the first nuclear reactor built

A
1942
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B
1944
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C
1945
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D
1947
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Solution

The correct option is A 1942
Chicago Pile 1 was the world's first nuclear reactor, built in 1942 by Nobel Prize winner Enrico Fermi. The reactor was built underneath the University of Chicago's Stagg Field football stadium. On Dec. 2, 1942, Enrico Fermi and 48 of his colleagues succeed in achieving in this reactor the world’s first man-made controlled nuclear chain reaction, thereby establishing the ability of mankind to control the release of nuclear energy.
So the correct answer is ' 1942'.

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