Determine the energy released in the process:
\({}_{1}^{2}\mathrm{H}+ {}_{1}^{2}\mathrm{H}\rightarrow {}_{2}^{4}\mathrm{He}+Q\)
Given: \(M\left({}_{1}^{2}\mathrm{H}\right)= 2.01471~\text{amu}, M\left({}_{2}^{4}\mathrm{He}\right)= 4.00388~\text{amu}\)
1. \(3.79\) MeV
2. \(13.79\) MeV
3. \(0.79\) MeV 
4. \(23.79\) MeV

Subtopic:  Mass-Energy Equivalent |
 70%
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When \({}_{3}^{7}\mathrm{Li}\) nuclei are bombarded by protons, and the resultant nuclei are \({}_{4}^{8}\mathrm{Be}\) the emitted particles will be:
1. Neutrons 2. Alpha particles
3. Beta particles 4. Gamma photons
Subtopic:  Types of Decay |
 52%
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If \(\frac{N}{Z}\) ratio in a nucleus is smaller than the required value for stability, then:
1. It may emit \(\alpha\text-\)particle.
2. It may emit \(\beta^{+}\) particle.
3. It may go for \(K\) capture.
4. All of the above are possible.
Subtopic:  Types of Decay |
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What is the respective number of \(\alpha\) and \(\beta\text-\) particles emitted in the following radioactive decay?
\({}_{90}^{200}\mathrm{X}\rightarrow {}_{80}^{168}\mathrm{Y}\)
1. \(6\) and \(8\) 2. \(6\) and \(6\)
3. \(8\) and \(8\) 4. \(8\) and \(6\)   
Subtopic:  Types of Decay |
 84%
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If a proton and anti-proton come close to each other and annihilate, how much energy will be released?

1. \(1.5 \times10^{-10}~\text{J}\) 2. \(3 \times10^{-10}~\text{J}\)
3. \(4.5 \times10^{-10}~\text{J}\) 4. None of these
Subtopic:  Mass-Energy Equivalent |
 54%
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The nucleus \({ }_{6}^{12} \mathrm{C}\) absorbs an energetic neutron and emits \(\beta\text-\)particle. The resulting nucleus is:
1. \({ }_{7}^{14} \mathrm{N}\)
2. \({ }_{5}^{13} \mathrm{B}\)
3. \({ }_{7}^{13} \mathrm{N}\)
4. \({ }_{6}^{13} \mathrm{C}\)
Subtopic:  Types of Decay |
 64%
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Fusion reaction takes place at a higher temperature because:

1. atoms get ionized at high temperatures.
2. kinetic energy is high enough to overcome the Coulomb repulsion between nuclei.
3. molecules break up at a high temperature.
4. nuclei break up at a high temperature.
Subtopic:  Nuclear Energy |
 81%
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Which of the following pairs of nuclei are isotones?
1. \({}_{34}^{74}\mathrm{Se}, {}_{31}^{71}\mathrm{Ca}\)
2. \({}_{42}^{92}\mathrm{Mo}, {}_{40}^{92}\mathrm{Zr}\)
3. \({}_{38}^{81}\mathrm{Sr}, {}_{38}^{86}\mathrm{Sr}\)
4. \({}_{20}^{40}\mathrm{Ca}, {}_{16}^{32}\mathrm{S}\)

Subtopic:  Nuclear Binding Energy |
 85%
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If in nuclear reactor using \(\mathrm{U}^{235}\) as fuel, the power output is \(4.8\) MW, the number of fissions per second is:
(Energy released per fission of \(\mathrm{U}^{235}=200\) MeV watts, \(1~\text{eV}= 1.6\times 10^{-19}~\text{J})\)
1. \(1.5\times 10^{17}\)
2. \(3\times 10^{19}\)
3. \(1.5\times 10^{25}\)

4. \(3\times 10^{25}\)

Subtopic:  Nuclear Energy |
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Calculate the \(Q\text-\)value of the nuclear reaction:
\(2~{ }_{6}^{12} \mathrm{C}\rightarrow{ }_{10}^{20} \mathrm{Ne}+{ }_2^4 \mathrm{He}\)
The following data are given:
\(m({ }_{6}^{12} \mathrm{C})=12.000000~\text{amu}\)
\(m({ }_{10}^{20} \mathrm{Ne})=19.992439~\text{amu}\)
\(m({ }_{2}^{4} \mathrm{He})=4.002603~\text{amu}\)
1. \(3.16~\text{MeV}\)
2. \(5.25~\text{MeV}\)
3. \(3.91~\text{MeV}\)
4. \(4.65~\text{MeV}\)

Subtopic:  Mass-Energy Equivalent |
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