Select Chapter Topics:
Q. No.The mass of a neutral carbon atom in the ground state:
| 1. | is exact \(12\) u |
| 2. | is less than \(12\) u |
| 3. | is more than \(12\) u |
| 4. | depends on the form of carbon such as graphite or charcoal |
Subtopic: Nuclear Energy |
57%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
The mass number of a nucleus is equal to:
| 1. | the number of neutrons in the nucleus. |
| 2. | the number of protons in the nucleus. |
| 3. | the number of nucleons in the nucleus. |
| 4. | none of them. |
Subtopic: Nuclear Energy |
85%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
The nuclear radius of a \({ }_{3}^{8} \mathrm{L i}\) nucleus is \(2.2~\text{fm}\). The nuclear radius of \({ }_{30}^{64} \mathrm{Zn}\) is nearly:
1. \(4.4~\text{fm}\)
2. \(7~\text{fm}\)
3. \(22~\text{fm}\)
4. \(17.6~\text{fm}\)
1. \(4.4~\text{fm}\)
2. \(7~\text{fm}\)
3. \(22~\text{fm}\)
4. \(17.6~\text{fm}\)
Subtopic: Nucleus |
85%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
If the mass of the iron nucleus is \(55.85~\text{u}\) and \(\mathrm{A} = 56\), the nuclear density of the iron is:
| 1. | \(2.27\times10^{17}~\text{kg m}^{-3}\) |
| 2. | \(1.36\times 10^{15}~\text{kg m}^{-3}\) |
| 3. | \(3.09\times10^{17}~\text{kg m}^{-3}\) |
| 4. | \(4.11\times10^{15}~\text{kg m}^{-3}\) |
Subtopic: Nuclear Binding Energy |
61%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
Links
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Expression for the average radius of a nucleus and hence the radius of a given hypothetical nucleus \(^{64}_{27}\mathrm{X}\) will respectively be: [Given that \(R_0=1.1\) fm]
1. \(R=R_0A^{\frac{1}{2}}\), \(8.8 \) fm
2. \(R=R_0A^{\frac{1}{3}}\), \(4.4\) fm
3. \(R=R_0A^{\frac{1}{3}}\), \(3.3\) fm
4. \(R=R_0A^{\frac{1}{6}}\), \(2.2\) fm
1. \(R=R_0A^{\frac{1}{2}}\), \(8.8 \) fm
2. \(R=R_0A^{\frac{1}{3}}\), \(4.4\) fm
3. \(R=R_0A^{\frac{1}{3}}\), \(3.3\) fm
4. \(R=R_0A^{\frac{1}{6}}\), \(2.2\) fm
Subtopic: Nucleus |
84%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
The radius of a nucleus \((r)\) is directly proportional to the cube-root of the number of nucleons \((N).\) Assume that the mass of a nucleon is fixed \((m_n).\) The density \((\rho)\) of a nucleus varies as:
1. \(N^3\)
2. \(N^1\)
3. \(N^0\)
4. \(N^{-1}\)
1. \(N^3\)
2. \(N^1\)
3. \(N^0\)
4. \(N^{-1}\)
Subtopic: Nucleus |
82%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
A nucleus of mass number \(189\) splits into two nuclei having mass numbers \(125\) and \(64.\) The ratio of the radius of two daughter nuclei respectively is:
| 1. | \(25:16\) | 2. | \(1:1\) |
| 3. | \(4:5\) | 4. | \(5:4\) |
Subtopic: Nucleus |
81%
From NCERT
NEET - 2022
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
A stationary nucleus breaks into two daughter nuclei having velocities in the ratio \(3:2.\) The radius of their nuclear sizes is:
1. \(\left ( \dfrac{2}{3} \right )^{1/2}\)
2. \(\left ( \dfrac{2}{3} \right )^{1/3}\)
3. \(\left ( \dfrac{4}{9} \right )^{1/3}\)
4. \(\left ( \dfrac{9}{4} \right )^{1/2}\)
1. \(\left ( \dfrac{2}{3} \right )^{1/2}\)
2. \(\left ( \dfrac{2}{3} \right )^{1/3}\)
3. \(\left ( \dfrac{4}{9} \right )^{1/3}\)
4. \(\left ( \dfrac{9}{4} \right )^{1/2}\)
Subtopic: Nucleus |
76%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
The following figures represent the variation of \(\mathrm{ln}\left(\dfrac{{R}}{{R}_0}\right)\) with \(\mathrm{ln}(A)\):
(If \(R=\) the radius of a nucleus and \(A =\) its mass number)
(If \(R=\) the radius of a nucleus and \(A =\) its mass number)
| 1. |  |
2. |  |
| 3. |  |
4. |  |
Subtopic: Nucleus |
77%
From NCERT
Please attempt this question first.
Hints
Please attempt this question first.
Atoms have different atomic numbers as well as different mass numbers but have the same number of neutrons is called:
| 1. | isotopes | 2. | isobars |
| 3. | isotones | 4. | isodiaphers |
Subtopic: Nucleus |
79%
From NCERT
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Hints
To view explanation, please take trial in the course.
NEET 2025 - Target Batch
Select Chapter Topics:
© 2024 GoodEd Technologies Pvt. Ltd.