Multiple choice general knowledge

The Nagasaki bomb was made from

  1. Uranium – 235

  2. Plutonium – 239

  3. Uranium – 238

  4. Neptunium – 239

Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

The Nagasaki bomb, codenamed 'Fat Man', used plutonium-239 as its fissile material. This was different from the Hiroshima bomb 'Little Boy', which used uranium-235. Plutonium-239 is produced in nuclear reactors by irradiating uranium-238, then through chemical separation.