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Q. No.When a deuterium is bombarded on \({}_{8}^{16}\mathrm{O}\) nucleus, an \(\alpha\text-\)particle is emitted, then the product nucleus is:
1.
\({}_{7}^{13}\mathrm{N}\)
2.
\({}_{5}^{10}\mathrm{B}\)
3.
\({}_{4}^{9}\mathrm{Be}\)
4.
\({}_{7}^{14}\mathrm{N}\)
Subtopic: Types of Decay |
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The mass of \({}_{7}^{15}\mathrm{N}\) is \(15.00011\) amu, mass of \({}_{8}^{16}\mathrm{O}\) is \(15.99492\) amu and \(m_p = 1.00783\) amu. Determine the binding energy of the last proton of \({ }_{8}^{16}\mathrm{O}\).
1. \(2.13\) MeV
2. \(0.13\) MeV
3. \(10\) MeV
4. \(12.13\) MeV
Subtopic: Nuclear Binding Energy |
51%
From NCERT
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The power obtained in a reactor using \(\mathrm{U}^{235}\) disintegration is \(1000\) kW. The mass decay of \(\mathrm{U}^{235}\) per hour is:
1. \(1\) microgram
2. \(10\) microgram
3. \(20\) microgram
4. \(40\) microgram
Subtopic: Nuclear Energy |
From NCERT
PMT - 2011
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In the nuclear reaction: \(\mathrm{X}\left(n,\alpha\right){}_{3}^{7}\mathrm{Li}\) the term \({X}\) will be:
| 1. | \({}_{5}^{10}\mathrm{B}\) | 2. | \({}_{5}^{9}\mathrm{B}\) |
| 3. | \({}_{5}^{11}\mathrm{B}\) | 4. | \({}_{2}^{4}\mathrm{He}\) |
Subtopic: Types of Decay |
From NCERT
PMT - 2001
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In a radioactive decay process, the negatively charged emitted -particles are:
| 1. | The electrons present inside the nucleus. |
| 2. | The electrons produced as a result of the decay of neutrons inside the nucleus. |
| 3. | The electrons produced as a result of collisions between atoms. |
| 4. | The electrons orbiting around the nucleus. |
Subtopic: Types of Decay |
83%
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In the reaction \({}_{1}^{2}\mathrm{H}+ {}_{1}^{3}\mathrm{H}\rightarrow {}_{2}^{4}\mathrm{He}+ {}_{0}^{1}\mathrm{n}\)
if the binding energies of \({}_{1}^{2}\mathrm{H}, {}_{1}^{3}\mathrm{H},\) and \({}_{2}^{4}\mathrm{He}\) are respectively \(a,b,\) and \(c\) (in MeV), then the energy in (MeV) released in this reaction is:
1. \(c+a-b\)
2. \(c-a-b\)
3. \(a+b+c\)
4. \(a+b-c\)
if the binding energies of \({}_{1}^{2}\mathrm{H}, {}_{1}^{3}\mathrm{H},\) and \({}_{2}^{4}\mathrm{He}\) are respectively \(a,b,\) and \(c\) (in MeV), then the energy in (MeV) released in this reaction is:
1. \(c+a-b\)
2. \(c-a-b\)
3. \(a+b+c\)
4. \(a+b-c\)
Subtopic: Nuclear Binding Energy |
74%
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A nuclear reaction along with the masses of the particle taking part in it is as follows;
\(~~~~A ~~~~+~~~~~ B~~~~~ \rightarrow~~~~C ~~+~~~~ D~~~+~ ~Q~ ~\text{MeV}\\ \small{1.002~\text u~~~~~~~~ 1.004~\text u ~~~~~~~~~~~1.001~\text u~~~~~~1.003~\text u}\)
The energy \(Q\) liberated in the reaction is:
1. \(1.234~\text{MeV}\)
2. \(0.931~\text{MeV}\)
3. \(0.465~\text{MeV}\)
4. \(1.862~\text{MeV}\)
\(~~~~A ~~~~+~~~~~ B~~~~~ \rightarrow~~~~C ~~+~~~~ D~~~+~ ~Q~ ~\text{MeV}\\ \small{1.002~\text u~~~~~~~~ 1.004~\text u ~~~~~~~~~~~1.001~\text u~~~~~~1.003~\text u}\)
The energy \(Q\) liberated in the reaction is:
1. \(1.234~\text{MeV}\)
2. \(0.931~\text{MeV}\)
3. \(0.465~\text{MeV}\)
4. \(1.862~\text{MeV}\)
Subtopic: Mass-Energy Equivalent |
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In a fission reaction,
\(^{236}_{92}\mathrm{U}\rightarrow ~^{117}\mathrm{X}~+~^{117}\mathrm{Y}~+~^1_0n~+~^1_0n,\) the binding energy per nucleon of \(\mathrm{X}\) and \(\mathrm{Y}\) is \(8.5\) MeV whereas that of \(^{236}\mathrm{U}\) is \(7.6\) MeV. The total energy liberated will be about:
1. \(2000\) MeV
2. \(200\) MeV
3. \(2\) MeV
4. \(1\) keV
\(^{236}_{92}\mathrm{U}\rightarrow ~^{117}\mathrm{X}~+~^{117}\mathrm{Y}~+~^1_0n~+~^1_0n,\) the binding energy per nucleon of \(\mathrm{X}\) and \(\mathrm{Y}\) is \(8.5\) MeV whereas that of \(^{236}\mathrm{U}\) is \(7.6\) MeV. The total energy liberated will be about:
1. \(2000\) MeV
2. \(200\) MeV
3. \(2\) MeV
4. \(1\) keV
Subtopic: Nuclear Binding Energy |
77%
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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
1. \(19.2\) MeV
2. \(23.6\) MeV
3. \(26.9\) MeV
4. \(13.9\) MeV
Subtopic: Nuclear Binding Energy |
76%
From NCERT
PMT - 2001
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Which of the following is used as a moderator in nuclear reactors?
1. Plutonium
2. Cadmium
3. Heavy water
4. Uranium
Subtopic: Nuclear Energy |
80%
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