KCET Atoms Weightage 2026: Atoms carry an expected weightage of around 3 to 4% in the KCET 2026 exam. Candidates can anticipate 2 to 3 questions from this topic. The chapter covers key concepts such as Rutherford’s atomic model, emission and absorption spectra, Bohr’s model of the hydrogen atom, De Broglie’s hypothesis, and energy levels and transitions. Aspirants appearing for the KCET 2026 exam should aim to master this chapter by focusing on conceptual clarity, numerical problem-solving, and theory-based questions.
To score well in the KCET 2026 exam, candidates must have a thorough understanding of the prescribed syllabus. Practising KCET previous years’ question papers can further improve accuracy and boost overall scores. In this article, we have covered the KCET 2026 Atoms weightage, important topics, and a few sample questions to support effective preparation.
Also check: What is a good scores in the KCET 2026 exam?
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Expected KCET Atoms Weightage 2026
In the KCET 2026 Physics section, the KCET 2026 syllabus of Atoms generally accounts for a small but significant portion of the KCET 2026 exam. Based on the KCET's previous years' question paper patterns, the total number of questions from this topic generally falls within the range of 2 to 3. KCET Atoms is one of the chapters that holds approximately 3-4 % of the weightage of the Physics section, which comprises 60 questions. These topics generally cover conceptual questions, theory-based questions, along numerical problems.
Also check: KCET Sample Paper
KCET 2026 Atoms Important Topics
Some of the important topics of KCET 2026 Atoms have been listed below.
Topics | Details |
|---|---|
Rutherford's Atomic Model | Explanation of the alpha particle scattering experiment and its limitations. |
Bohr’s Model of the Hydrogen Atom | Postulates, energy levels, quantization of angular momentum, and spectral lines. |
Emission and Absorption Spectra | Description of spectral series (Lyman, Balmer, Paschen, Brackett, and Pfund). |
Energy Levels and Transitions | Calculation of energy differences between orbits and photon emission. |
De Broglie’s Hypothesis | Connection between particle and wave nature. |
Heisenberg’s Uncertainty Principle | Basic concepts and implications for atomic models. |
Nucleus | Concept of nucleons and atomic mass, ions, and isotopes. |
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KCET Atoms Sample Questions
Candidates can check some of the sample KCET Atoms questions as provided below.
- If a hydrogen atom emits a photon of energy 10.2 eV, what is the initial and final energy level of the electron?
- Which spectral line in the Balmer series corresponds to a transition from n=4n = 4n=4 to n=2n = 2n=2? (Understanding of emission lines and their wavelengths is needed.)
- What is the radius of the second orbit of a hydrogen atom according to Bohr’s model? (Options might include different multiples of the Bohr radius.)
- An alpha particle is fired towards a gold foil in Rutherford’s experiment. If it deflects by 180°, what does this indicate about the nature of the atomic nucleus?
- Calculate the energy of the photon emitted when an electron in a hydrogen atom transitions from n=3 to n=2.
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FAQs
The cutoff of KCET refers to the minimum marks required by candidates to qualify for the KCET exam. KEA KCET cutoff is released separately for the general merit and Hyderabad Karnataka region. The exam authority releases the KCET cutoff after each counselling round.
It is not mandatory to attempt the Biology paper in the KCET exam if you want to opt for Engineering. Biology marks are only considered for the Medical, Dental and Paramedical fields. However, if you want to pursue Biotechnology in Engineering, attempting Biology in the KCET exam is compulsory.
50% mark is the passing percentage for the general category candidates and 40% for the SC/ST/OBC category for the KCET exam.
As per the previous year exam analysis, the KCET 2026 exam might be of a moderate to difficult level. KCET questions will be based on the first and second-year PUC syllabus as determined by the Department of Pre-University Education of Karnataka State.
Candidates cannot skip Mathematics in the KCET exam. Mathematics is a mandatory subject in the KCET exam, and skipping it would disqualify candidates from the KCET examination.
Candidates looking to score good marks in the Karnataka CET exam are advised to solve the KCET previous year question papers and mock tests. Solving PYQs of KCET will enable candidates to get an idea about the KCET question paper pattern and the marking scheme.
The NCERT best books are a good choice for candidates to start if they want to prepare for the KCET 2026 exam. Upon finishing the NCERT books, candidates can move ahead to the crucial KCET best books. Additionally, the KCET best books are another resource that candidates can use to study for the KCET exam.
The identical chapters and subjects from Classes 11 and 12 are covered by the questions in both KCET and JEE Main exams. However, in comparison to KCET, the questions in the JEE Main exam are more difficult.
The Chemistry chapters with maximum weightage in the KCET exam are alcohols, electrochemistry, d and f block elements, chemical kinetics, phenols and ethers and aldehydes, ketones, and carboxylic acids.
Chapters with maximum weightage in KCET Physics are Gravitation, Motion in a Straight Line, Oscillations and Thermodynamics since they carry 7% to 8% weightage. Important chapters for KCET Maths comprise Integration, Vectors, Permutation and Combination, and 3-D Geometry which weigh around 6% to 7% in the KCET exam.
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