||The reaction in which a single heavy nucleus splits into two or more light nuclei is called nuclear fission reaction.
||The reaction in which two or more light nuclei combine to form a single heavy nucleus is called nuclear fusion reaction.
||It can be controlled.
||It cannot be controlled
||An atom bomb is made on the basis of this reaction.
||A nuclear bomb is made on the basis of this reaction.
||It occurs in the form of chain reaction.
||It does not occur in the form of chain reaction.
||Less energy is produced comparatively.
||More energy is produced comparatively.
||The heavy nucleus is bombarded with neutrons.
||Light nuclei are heated to an extremely high temperature.
||Raw material is not easily available and is costly.
||Raw material is comparatively cheap and easily available.
||Disposal of nuclear waste is great environmental problem.
||Disposal of nuclear waste is not involved
||It does not occur normally in nature.
||It occurs in stars, such as sun.
||Critical mass of the substance and high speed neutrons are required.
||High density, high temperature environment is required.
||It produces many highly radioactive particles.
||Few radioactive particles are produced by this reaction.
||It takes little energy to split two atoms in this reaction.
||Extremely high energy is required to bring two or more protons close enough.
||Proper mechanisms are available to have control over it.
||Proper mechanisms are yet to be developed regarding this reaction.
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Differences between nuclear fission and nuclear fusion reaction