Question

mention the laws followed by nuclear reactions​

Answer 1

On analyzing nuclear reactions, we apply the many conservation laws. Nuclear reactions are subject to classical conservation laws for charge, momentum, angular momentum, and energy (including rest energies).  Additional conservation laws, not anticipated by classical physics, are electric charge, lepton number and baryon number. 

Answer 2

Thus, a nuclear reaction must cause a transformation of at least one nuclide to another. ... In analyzing nuclear reactions, we apply the many conservation laws. Nuclear reactions are subject to classical conservation laws for charge, momentum, angular momentum, and energy (including rest energies).