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In any fission process the ratio
1. Greater than 1
2. Depends on the mass of the parent nucleus
3. Equal to 1
4. Less than 1
Subtopic: Nuclear Energy |
61%
Level 2: 60%+
AIPMT - 2005
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Fission of nuclei is possible because the binding energy per nucleon in them:
| 1. | decreases with the mass number at low mass numbers |
| 2. | increases with the mass number at low mass numbers |
| 3. | decreases with the mass number at high mass numbers |
| 4. | increases with the mass number at high mass numbers |
Subtopic: Nuclear Energy |
61%
Level 2: 60%+
AIPMT - 2005
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Nuclear–fission is best explained by:
| 1. | Liquid droplet theory. |
| 2. | Yukawa \(\pi\text-\)meson theory. |
| 3. | Independent particle model of the nucleus. |
| 4. | Proton-proton cycle. |
Subtopic: Nuclear Energy |
Level 3: 35%-60%
AIPMT - 2000
Hints
For the nuclear reaction:
\({}_{92}^{235}\mathrm{U}+ {}_{0}^{1}\mathrm{n}\rightarrow {}_{56}^{144}\mathrm{Ba}+...+3{}_{0}^{1}\mathrm{n}\)
The blank space can be filled by:
\({}_{92}^{235}\mathrm{U}+ {}_{0}^{1}\mathrm{n}\rightarrow {}_{56}^{144}\mathrm{Ba}+...+3{}_{0}^{1}\mathrm{n}\)
The blank space can be filled by:
| 1. | \({}_{26}^{89}\mathrm{Kr}\) | 2. | \({}_{36}^{89}\mathrm{Kr}\) |
| 3. | \({}_{26}^{90}\mathrm{Sr}\) | 4. | \({}_{38}^{89}\mathrm{Sr}\) |
Subtopic: Nuclear Energy |
89%
Level 1: 80%+
AIPMT - 1998
Hints
Subtopic: Types of Decay |
72%
Level 2: 60%+
AIPMT - 1998
Hints
When \(\mathrm{X}\rightarrow {}_{7}^{14}\mathrm{N}+2\beta^{-}\) then the number of neutrons in \(\mathrm{X}\) will be:
1. \(3\)
2. \(5\)
3. \(7\)
4. \(9\)
1. \(3\)
2. \(5\)
3. \(7\)
4. \(9\)
Subtopic: Types of Decay |
61%
Level 2: 60%+
AIPMT - 1998
Hints
If in a nuclear fusion process. the masses of the fusing nuclei be \(m_1\) and \(m_2\) and the mass of the resultant nucleus be \(m_3,\) then:
| 1. | \( m_3=\left|m_1-m_2 \right|\) | 2. | \( m_3<\left ( m_1+m_2 \right ) \) |
| 3. | \( m_3>\left ( m_1+m_2 \right ) \) | 4. | \( m_3=\left ( m_1+m_2 \right ) \) |
Subtopic: Nuclear Binding Energy |
80%
Level 1: 80%+
AIPMT - 2004
Hints
A nucleus represented by the symbol \({}_{Z}^{A}\mathrm{X}\) has:
| 1. | \(Z\) protons and \(A-Z\) neutrons |
| 2. | \(Z\) protons and \(A\) neutrons |
| 3. | \(A\) protons and \(Z-A\) neutrons |
| 4. | \(Z\) neutrons and \(A-Z\) protons |
Subtopic: Nuclear Binding Energy |
91%
Level 1: 80%+
AIPMT - 2004
Hints
\(M_p\) denotes the mass of a proton and \(M_n\) that of a neutron. A given nucleus, of binding energy \(B\), contains \(Z\) protons and \(N\) neutrons. The mass \(M(N,Z)\) of the nucleus is given by:
(\(c\) is the velocity of light )
1. \(M(N,Z)= NM_n+ZM_p+ Bc^2\)
2. \(M(N,Z)= NM_n+ZM_p-\frac{B}{c^2}\)
3. \(M(N,Z)= NM_n+ZM_p+\frac{B}{c^2}\)
4. \(M(N,Z)= NM_n+ZM_p- Bc^2\)
Subtopic: Nuclear Binding Energy |
87%
Level 1: 80%+
AIPMT - 2004
Hints
If a radioactive element emitted one \(\alpha\) and one \(\beta\text-\)particle, then the mass number of the daughter element is:
1. decreased by \(4\)
2. increased by \(4\)
3. decreased by \(2\)
4. increased by \(2\)
1. decreased by \(4\)
2. increased by \(4\)
3. decreased by \(2\)
4. increased by \(2\)
Subtopic: Types of Decay |
88%
Level 1: 80%+
AIPMT - 1999
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