Nucleus Absorb Before You Solve MCQs Nuclei Physics NEET Practice Questions, MCQs, Past Year Questions (PYQs), NCERT Questions, Question Bank, Class 11 and Class 12 Questions, and PDF solved with answers

The radius of a nucleus

(r)

$(r)$ is directly proportional to the cube-root of the number of nucleons

(N) .

$(N).$ Assume that the mass of a nucleon is fixed

(m_{n}) .

$(m_n).$ The density

(ρ)

$(\rho)$ of a nucleus varies as:
1.

N^{3}

$N^3$
2.

N^{1}

$N^1$
3.

N^{0}

$N^0$
4.

N^{- 1}

$N^{-1}$

Subtopic: Nucleus |

84%

From NCERT

1

2

3

4

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

Q2:

Two nuclei have their mass numbers in the ratio of $1:3.$ The ratio of their nuclear densities would be:
1. $1:3$
2. $3:1$
3. $(3)^{1/3}:1$
4. $1:1$

Subtopic: Nucleus |

80%

From NCERT

AIPMT - 2008

1

2

3

4

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

Q3:

A nucleus of mass number

189

$189$ splits into two nuclei having mass numbers

125

$125$ and

64.

$64.$ 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 |

82%

From NCERT

NEET - 2022

1

2

3

4

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

Q4:

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 |

65%

From NCERT

1

2

3

4

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

Q5:

Which of the following particles, is unstable?
1. Proton
2. Neutron
3. Electron
4. Antineutrino

Subtopic: Nucleus |

From NCERT

1

2

3

4

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

NEET Information

courses

Company

Botany Questions

Chemistry Questions

Physics Questions

Zoology Questions

Add Note

Highlight in NCERT

Add Note

Highlight in NCERT

Add Note

Highlight in NCERT

Add Note

Highlight in NCERT

Add Note

Highlight in NCERT

NEET Information

courses

Company

Botany Questions

Chemistry Questions

Physics Questions

Zoology Questions