MCQ
In an atomic bomb, the energy is released due to
  • Chain reaction of neutrons and $_{92}{U^{235}}$
  • B
    Chain reaction of neutrons and $_{92}{U^{238}}$
  • C
    Chain reaction of neutrons and $_{92}{P^{240}}$
  • D
    Chain reaction of neutrons and $_{92}{U^{236}}$

Answer

Correct option: A.
Chain reaction of neutrons and $_{92}{U^{235}}$
a
In an atom bomb, the energy is released because of the chain reaction of neutrons and ${ }_{92} U ^{235}$.

The nuclear reaction taking place in the atom is as follows

${ }_{92} U ^{235}+{ }_0 n ^1 \rightarrow_{36} Ba ^{141}+{ }_{56} Kr ^{92}+30 n ^1+ Q (200 MeV )$

The three neutrons generated can react with three different atoms which leads to chain reaction.

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