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Important Questions: Atoms and Nuclei for JEE

10+ syllabus-aligned questions available

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The most important Atoms and Nuclei questions for JEE cover conceptual traps, standard results, and numerical patterns from Alpha-particle scattering experiment, Rutherford's model of atom, Bohr model, energy levels, hydrogen spectrum, Composition and size of nucleus, atomic masses, mass-energy relation, mass defect, Binding energy per nucleon and its variation with mass number, nuclear fission and fusion. Goodmarks provides 10+ high-yield MCQs with full solutions.

Focus on what matters most. These important Atoms and Nuclei questions cover high-weightage concepts from Alpha-particle scattering experiment, Rutherford's model of atom, Bohr model, energy levels, hydrogen spectrum, Composition and size of nucleus, atomic masses, mass-energy relation, mass defect, Binding energy per nucleon and its variation with mass number, nuclear fission and fusion — the topics JEE repeats every year.

Subtopics in Atoms and Nuclei

  • Alpha-particle scattering experiment, Rutherford's model of atom
  • Bohr model, energy levels, hydrogen spectrum
  • Composition and size of nucleus, atomic masses, mass-energy relation, mass defect
  • Binding energy per nucleon and its variation with mass number, nuclear fission and fusion

Free sample questions

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Q1PhysicsUnit 18: Atoms and Nuclei
When a gold sheet is bombarded by a beam of α\alpha -particles, only a few of them get deflected whereas most go straight, undeflected because: This question has multiple correct options
Q2PhysicsUnit 18: Atoms and Nuclei
The missing particle in the reaction: 25399Es+24He→101256Md+\underset{99}{253} \boldsymbol{E} \boldsymbol{s}+_{2}^{4} \boldsymbol{H} \boldsymbol{e} \rightarrow_{101}^{256} \boldsymbol{M} \boldsymbol{d}+
Q3PhysicsUnit 18: Atoms and Nuclei
Statement A: Density of nucleus is independent of its mass number Statement B: Beryllium is used as a moderator in nuclear reactors
Q4PhysicsUnit 18: Atoms and Nuclei
The wavelength of a certain electron transition in the hydrogen spectrum is 4864 A. Identify the transition.
Q5PhysicsUnit 18: Atoms and Nuclei
Fraunh offer line of the solar system is an example of:
Q6PhysicsUnit 18: Atoms and Nuclei
An electron with energy 12.09 eV strikes hydrogen atom in ground state and gives its all energy to the hydrogen atom. Therefore hydrogen atom is excited to
Q7PhysicsUnit 18: Atoms and Nuclei
A nucleus with atomic number zz and neutron number N undergoes two decay processes. The result is a nucleus with atomic number Z-3 and neutron number N-1. Which decay processes took place?
Q8PhysicsUnit 18: Atoms and Nuclei
Mark out the incorrect statement:

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Frequently asked questions

What makes a Atoms and Nuclei question "important" for JEE?

Important questions test core concepts that appear frequently across JEE Main and Advanced papers — definitions, standard formulas, and classic problem types.

Which subtopics in Atoms and Nuclei are high-weightage?

Key areas include Alpha-particle scattering experiment, Rutherford's model of atom, Bohr model, energy levels, hydrogen spectrum, Composition and size of nucleus, atomic masses, mass-energy relation, mass defect, Binding energy per nucleon and its variation with mass number, nuclear fission and fusion. Prioritise these before moving to edge cases.

How many important questions should I revise?

Revise 30–50 important MCQs per unit in the last month before JEE. Focus on questions you got wrong at least once.

Can I practise only important questions on Goodmarks?

Pro users can filter by unit and subtopic to target high-yield areas. Free users can attempt sample questions on this page.

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