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An uncontrolled nuclear chain reaction forms the basis of:(a) nuclear power plant (b) hydrogen bomb (c) thermal power station (d) atom bomb
(d) atom bomb
Explanation
An uncontrolled nuclear chain reaction forms the basis of an atom bomb. In an atom bomb, the nuclear fission reaction of uranium-235 or plutonium-239 is intentionally allowed to go out of control so as to produce a tremendous amount of energy in a very short time.
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