Energy released in the fission of a single nucleus is 200 MeV. The fission rate of a filled reactor operating at a power level of 5 W is
1.
2.
3.
4.
In one \(\alpha-\) and \(2\beta-\)
1. | mass number reduced by \(2\) |
2. | mass number reduces by \(6\) |
3. | atomic number is reduced by \(2\) |
4. | atomic number remains unchanged |
Which of the following is used as a moderator in nuclear reactors?
1. Plutonium
2. Cadmium
3. Heavy water
4. Uranium
Heavy water is used as a moderator in a nuclear reactor. The function of the moderator is
1. to control energy released in the reactor
2. to absorb neutrons and stop the chain reaction
3. to cool the reactor
4. to slow down the neutrons to thermal energies
The binding energy per nucleon of deuterium and helium atom is 1.1 MeV and 7.0 MeV. If two deuterium nuclei fuse to form a helium atom, the energy released is:
1. 19.2 MeV
2. 23.6 MeV
3. 26.9 MeV
4. 13.9 MeV
In a fission reaction,
\(^{236}_{92}U\rightarrow ~^{117}X~+~^{117}Y~+~^1_0n~+~^1_0n,\) the binding energy per nucleon of X and Y is 8.5 MeV whereas that of \(^{236}U\) is 7.6 MeV. The total energy liberated will be about:
1. 2000 MeV
2. 200 MeV
3. 2 MeV
4. 1 keV
A nuclear decay is expressed as
Then the unknown particle X is:
1. Neutron
2. antineutrino
3. proton
4. neutrino
When a deuterium is bombarded on nucleus, an -particle is emitted, then the product nucleus is:
1.
2.
3.
4.
A nuclear reaction given by \({ }_{Z}^{A} \mathrm{~X} \rightarrow{ }_{Z+1}^{A} \mathrm{Y}+e^{-}+\bar{v}\) represents:
1. fusion
2. fission
3. \(\beta^{-} \)-decay
4. \(\gamma \)-decay
The mass of is 15.00011 amu, mass of is 15.99492 amu and = 1.00783 amu. Determine the binding energy of the last proton of \({ }_8 O_{16}\).
1. 2.13 MeV
2. 0.13 MeV
3. 10 MeV
4. 12.13 MeV