+91-8527521718
Signup | Login
Select Question Set:
filter
Q. No.

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. \(17.6~\text{fm}\)

Subtopic:  Nucleus |
 86%
Level 1: 80%+
Hints
Let the average nuclear force exerted by a proton on a proton be \(\mathrm{F_{pp}}\), by a proton on a neutron be \(\mathrm{F_{pn}}\) and by a neutron on a neutron be \(\mathrm{F_{nn}}\). When their separations are nearly \(1~\text{fm}\), then,
1. \( \mathrm{F}_{\mathrm{pp}}<\mathrm{F}_{\mathrm{pn}}<\mathrm{F}_{\mathrm{nn}} \) 2. \( \mathrm{F}_{\mathrm{pn}}>\mathrm{F}_{\mathrm{pp}}>\mathrm{F}_{\mathrm{nn}} \)
3. \( \mathrm{F}_{\mathrm{pp}}>\mathrm{F}_{\mathrm{pn}}>\mathrm{F}_{\mathrm{nn}} \) 4. \(\mathrm{F}_{\mathrm{pp}}=\mathrm{F}_{\mathrm{pn}}=\mathrm{F}_{\mathrm{nn}}\)
Subtopic:  Nuclear Binding Energy |
 75%
Level 2: 60%+
Hints
A radioactive nucleus undergoes a cascade decay (i.e. two decays, one followed by another):
\(A\rightarrow B\rightarrow C\)
If each of the decays can be either \(\alpha\) or \(\beta^-\), then which of the following values of \(Z_C\) is possible? (\(Z_C\) & \(Z_A\) are the atomic numbers of \(C\) & \(A\).)
1. \(Z_A+2\)
2. \(Z_A-1\)
3. \(Z_A-4\)
4. Any of the above
Subtopic:  Types of Decay |
 56%
Level 3: 35%-60%
Hints
advertisementadvertisement
Antineutrinos are emitted during:
1. \(\alpha\)-decay
2. \(\beta\)-decay
3. \(\gamma\)-decay
4. neutron emission
Subtopic:  Types of Decay |
 81%
Level 1: 80%+
Hints
Given below are two statements: 
Assertion (A): The density of the nucleus is much higher than that of ordinary matter.
Reason (R): Most of the mass of the atom is concentrated in the nucleus while the size of this nucleus is almost \(10^5\) times smaller.
 
1. Both (A) and (R) are True and (R) is the correct explanation of (A).
2. Both (A) and (R) are True but (R) is not the correct explanation of (A).
3. (A) is True but (R) is False.
4. Both (A) and (R) are False.
Subtopic:  Nucleus |
 66%
Level 2: 60%+
Hints
The strong nuclear force between two nucleons:
1. is only attractive force.
2. is only repulsive force.
3. maybe attractive or repulsive in nature depending on the distance.
4. is a central force.
Subtopic:  Nuclear Binding Energy |
 57%
Level 3: 35%-60%
Hints
advertisementadvertisement
A force that holds two protons by the same force as the force between two neutrons in a nucleus is:
1. An electric force
2. Weak nuclear force
3. Strong nuclear force
4. Gravitational force
Subtopic:  Nuclear Binding Energy |
 84%
Level 1: 80%+
Hints
In an exoergic nuclear reaction (i.e. energy is released in the reaction), let
1. \(E_1\): total binding energy of initial nuclei
2. \(E_2\): total binding energy of final nuclei
3. \(A_1\): total number of nucleons of initial nuclei
4. \(A_2\): total number of nucleons of final nuclei
Then:
1. \(E_1>E_2\)
2. \(E_2>E_1\)
3. \(E_1=E_2\)
4. \(\dfrac{E_1}{A_1}=\dfrac{E_2}{A_2}\)
Subtopic:  Nuclear Binding Energy |
 52%
Level 3: 35%-60%
Hints
 Atomic number increases in:
1. \(\alpha\text-\)decay.
2. \(\beta^{-}\text-\)decay.
3. \(\beta^{+}\text{-}\)decay.
4. \(K\text{-}\)electron capture.
Subtopic:  Types of Decay |
 80%
Level 1: 80%+
Hints
advertisementadvertisement
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. \(N^{-1}\)
Subtopic:  Nucleus |
 82%
Level 1: 80%+
Hints
Select Question Set:
filter
Q. No.

NEET Information

courses

Company

Botany Questions

Chemistry Questions

Physics Questions

Zoology Questions

© 2025 GoodEd Technologies Pvt. Ltd.