Q.
Which reaction is an example of chain reaction?
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a
92235U⟶24He+90231Th
b
3475Se⟶3575Br+−10e
c
53123I⟶53123I+ energy
d
92235U+01n⟶56142Ba+3691Kr+301n
answer is D.
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Detailed Solution
.Fission chain reactions occur because of interactions between neutrons and fissile isotopes (such as 235U). The chain reaction requires both the release of neutrons from fissile isotopes undergoing nuclear fission and the subsequent absorption of some of these neutrons in fissile isotopes.
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