Which one of the following single-step nuclear processes is expected to absorb energy…

PHYSICS · Single correct · CBSE · Physics · Nuclei · Nuclei

Problem

Which one of the following single-step nuclear processes is expected to absorb energy rather than release it? (a) 2 ⁣H+3 ⁣H  →  4 ⁣He+n^{2}\!\text{H}+{}^{3}\!\text{H}\;\rightarrow\;{}^{4}\!\text{He}+n (b) 12 ⁣C+12 ⁣C  →  24 ⁣Mg^{12}\!\text{C}+{}^{12}\!\text{C}\;\rightarrow\;{}^{24}\!\text{Mg} (c) 56 ⁣Fe+56 ⁣Fe  →  112 ⁣Xe^{56}\!\text{Fe}+{}^{56}\!\text{Fe}\;\rightarrow\;{}^{112}\!\text{Xe} (d) n+235 ⁣U  →n+{}^{235}\!\text{U}\;\rightarrow fission fragments + +\,neutrons

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