Fission Reaction | MCQs

Explanation

Nuclear power plants primarily use a specific type of uranium 235 for nuclear fission

because its atoms are easily split apart.

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Uranium's most stable isotope, uranium-238,

has a half-life of about 4,468,000,000 years.

Uranium-238 is not fissile, but is a fertile isotope,

because after neutron activation it can produce plutonium-239, another fissile isotope.

Explanation

A fission reaction is a chemical reaction in which an atomic nucleus splits into smaller parts, releasing energy.

It typically occurs in nuclear reactors and atomic bombs.

Explanation

Nuclear fission is a process in which a heavy, unstable nucleus splits into two or more smaller nuclei, releasing energy and often additional particles like neutrons.

This process is the opposite of nuclear fusion, where smaller nuclei combine to form a heavier nucleus.

Explanation

Uranium-235 (U²³⁵) is a fissile isotope, meaning it readily undergoes nuclear fission when struck by a neutron.

It is commonly used in nuclear reactors and atomic bombs for this reason.

Explanation

The correct statement for a nuclear reactor is: "Moderator slow down the neutron."