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Q. No.What happens to the mass number and the atomic number of an element when it emits \(\gamma\text{-}\)radiation?
1.
mass number decreases by four and atomic number decreases by two.
2.
mass number and atomic number remain unchanged.
3.
mass number remains unchanged while the atomic number decreases by one.
4.
mass number increases by four and the atomic number increases by two.
Subtopic: Types of Decay |
84%
Level 1: 80%+
NEET - 2020
Hints
Links
For the given reaction, the particle \(\mathrm{X}\) is:
\({ }_6^{11} \mathrm{C}\rightarrow { }_5^{11}\mathrm{B}+\beta^{+}+\mathrm{X}\)
1. neutron
2. anti-neutrino
3. neutrino
4. proton
Subtopic: Types of Decay |
66%
Level 2: 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
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 |
79%
Level 2: 60%+
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
Which of the following are suitable for the fusion process?
| 1. | light nuclei |
| 2. | heavy nuclei |
| 3. | the element must be lying in the middle of the periodic table |
| 4. | middle elements which are lying on the binding energy curve |
Subtopic: Nuclear Energy |
81%
Level 1: 80%+
AIPMT - 2002
Hints
Which of the following rays are not electromagnetic waves?
1. \({X}\text-\)rays
2. \(\gamma\text-\)rays
3. \(\beta\text-\)rays
4. Heat rays
1. \({X}\text-\)rays
2. \(\gamma\text-\)rays
3. \(\beta\text-\)rays
4. Heat rays
Subtopic: Types of Decay |
59%
Level 3: 35%-60%
AIPMT - 2003
Hints
The mass of a proton is \(1.0073\) u and that of a neutron is \(1.0087\) u (u = atomic mass unit). The binding energy of \({}_{2}^{4}\mathrm{He}\) is: (Given: helium nucleus mass ≈ \(4.0015\) u)
| 1. | \(0.0305\) J | 2. | \(0.0305\) erg |
| 3. | \(28.4\) MeV | 4. | \(0.061\) u |
Subtopic: Nuclear Binding Energy |
77%
Level 2: 60%+
AIPMT - 2003
Hints
The mass number of a nucleus is:
| 1. | always less than its atomic number. |
| 2. | always more than its atomic number. |
| 3. | sometimes equal to its atomic number. |
| 4. | sometimes less than and sometimes more than its atomic number. |
Subtopic: Nuclear Binding Energy |
56%
Level 3: 35%-60%
AIPMT - 2003
Hints
A nuclear reaction is given by;
\({}_{Z}^{A}\mathrm{X}\rightarrow {}_{Z+1}^{A}\mathrm{Y}+{}_{-1}^{0}\mathrm{e}+\nu\)
represents:
1. \(\beta\text-\)decay
2. \(\gamma\text-\)decay
3. fusion
4. fission
\({}_{Z}^{A}\mathrm{X}\rightarrow {}_{Z+1}^{A}\mathrm{Y}+{}_{-1}^{0}\mathrm{e}+\nu\)
represents:
1. \(\beta\text-\)decay
2. \(\gamma\text-\)decay
3. fusion
4. fission
Subtopic: Types of Decay |
92%
Level 1: 80%+
AIPMT - 2003
Hints
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