GENERAL KNOWLEDGE

Detailed explanation-1: -Nuclear Fusion reactions power the Sun and other stars. In a fusion reaction, two light nuclei merge to form a single heavier nucleus. The process releases energy because the total mass of the resulting single nucleus is less than the mass of the two original nuclei.

Detailed explanation-2: -Scientists have hailed a ‘true breakthrough’ as a fusion reaction has successfully generated more energy than was used to create it. For over seventy years, scientists have been attempting to harness thermonuclear fusion-the power source of stars-to generate energy.

Detailed explanation-3: -Abundant energy: Fusing atoms together in a controlled way releases nearly four million times more energy than a chemical reaction such as the burning of coal, oil or gas and four times as much as nuclear fission reactions (at equal mass).

Detailed explanation-4: -Nuclear fission is a reaction in which the nucleus of an atom splits into two or more smaller nuclei. The fission process often produces gamma photons, and releases a very large amount of energy even by the energetic standards of radioactive decay.