(a) The process represents nuclear fission.
In this process, a heavy nucleus of uranium splits into two smaller nuclei of barium and krypton when bombarded with low-energy neutrons. A tremendous amount of energy is also produced.
(b) Particle c is a neutron and x is equal to 3.
(c) E represents the tremendous amount of energy that is liberated in the reaction.
(d) The given reaction is utilised in nuclear power stations.
(e) An atom bomb is based on a similar type of reaction.