Q. Fissile material is a substance that:
Quarterly-SFG-Jan-to-March
Red Book

[A] Can sustain a nuclear fission chain reaction

[B] Is highly radioactive but cannot sustain a chain reaction

[C] Is used as a coolant in nuclear reactors

[D] Is a byproduct of nuclear fusion

Answer: A
Notes:

Explanation – Fissile materials are capable of sustaining a nuclear fission chain reaction when struck by low-energy (thermal) neutrons. Examples include uranium-235, plutonium-239, and uranium-233.

Source: The Hindu

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