Question

The first critical nuclear fission reaction was carried out in

• A. $1942$
• B. $1945$
• C. $1950$
• D. $1964$

Answer 1

The correct option is A

$1942$

1. The world's first self-sustained fission reaction was carried out in the year $1942$.
2. This was carried out at the University of Chicago's football stadium under the guidelines of the scientist Enrico Fermi.
3. The process of splitting a heavy nucleus into two smaller nuclei with the liberation of a large amount of energy is known as nuclear fission.
4. This huge experiment paved the way for building up the atomic bombs.

Hence, option A is the correct answer.