GENERAL KNOWLEDGE

GK

NUCLEAR SCIENCE

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
What causes nuclear fission
A
Its caused when protons and neutrons are combined
B
It is caused when two atoms are combined and releases ennergy
C
Its caused when an atom splits into two atoms and releases energy
D
It is caused when protons and neutrons split
Explanation: 

Detailed explanation-1: -Fission occurs when a neutron slams into a larger atom, forcing it to excite and split into two smaller atoms-also known as fission products. Additional neutrons are also released that can initiate a chain reaction. When each atom splits, a tremendous amount of energy is released.

Detailed explanation-2: -During nuclear fission, a neutron collides with a uranium atom and splits it, releasing a large amount of energy in the form of heat and radiation. More neutrons are also released when a uranium atom splits. These neutrons continue to collide with other uranium atoms, and the process repeats itself over and over again.

Detailed explanation-3: -Assertion :The splitting of atomic nuclei releases enormous energy Reason: When a single free neutron strikes the nucleus of an atom of fissile (radioactive) material like uranium 235 or plutonium 239, it usually knocks two or three more neutrons free.

Detailed explanation-4: -The process releases energy because the total mass of the resulting single nucleus is less than the mass of the two original nuclei. The leftover mass becomes energy. Einstein’s equation (E=mc2), which says in part that mass and energy can be converted into each other, explains why this process occurs.

Detailed explanation-5: -Fission: The basics In self-sustained fission, a neutron causes an atomic nucleus to split, and this gives off more neutrons that cause nearby atoms to break apart, giving off yet more neutrons, in a chain reaction (see diagram). Heat from this process can be used to generate electrical energy.

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