.
KCET Nuclei Weightage 2026
is expected to be 6% of the Physics Section. Candidates can expect 5 to 6 questions on this topic in the KCET 2026 exam. The At Nuclei chapter includes the Composition and Size of Nucleus, Atomic Masses, Isotopes, Isobars, Isotones, Nuclear Forces, Mass-Energy Relation Mass Defect, Binding Energy per Nucleon and its Variation with Mass Number, Radioactivity(only types of Radioactive decay), Nuclear Fission and Fusion etc. Students preparing for the
KCET 2026
exam should master all the topics to obtain 6% of the weightage of this chapter.
To obtain good marks in the KCET 2026 exam, students should thoroughly prepare all the topics included in the
KCET syllabus 2026
. Solving the
KCET Previous Year Question Papers
will aid aspirants in obtaining
good scores in the KCET 2026 exam
. We have provided the complete information on KCET 2026 Nuclei Weightage along with the previous year's questions here.
Expected KCET Nuclei Weightage 2026
Aspirants can refer to the table here to understand the KCET 2026 Nuclei Weightage.
Chapter | Number of Questions | Weightage in Percentage |
|---|---|---|
Nuclei | 5-6 Questions | 6 |
KCET 2026 Nuclei Topics & Expected Questions
Candidates can check the Nuclei topics and the number of questions asked from this chapter in the exam.
Chapter | Topics included in the chapter | Expected Questions |
|---|---|---|
Nuclei |
| 5-6 |
Also Read: KCET 2026 Preparation Tips
Important Topics of KCET 2026 Nuclei
Some of the important topics that the KCET aspirants cannot miss while preparing the Nuclei chapter are:
- Mass Defect and Binding Energy Explanation
- Isobars, Isotones
Best Books for KCET 2026 Nuclei
KCET aspirants can check the best books while studying the Nuclei chapter
- NCERT books of Classes 11&12
- Physics for Karnataka CET & COMEDK
- Fundamentals of Physics by S Chand
- Pradeep's Fundamental Physics
Also Read: KCET Mock Tests
Previous Year Questions of KCET Nuclei
The candidates can refer to some previous year's questions asked from the Nuclei chapter. Check some of the questions here.
- A radioactive sample has a half-life of 3 years. The time required for the activity of the sample to reduce to 1/5th of its initial value is about
- 10 years
- 7 years
- 15 years
- 5 years
Correct Answer: B
- A nucleus with mass number 220 initially at rest emits an alpha particle. If the Q value of the reaction is 5.5 MeV. Calculate the value of the kinetic energy of the alpha particle
- 6.5 MeV
- 5.4 MeV
- 7.4 MeV
- 4.5 MeV
Correct Answer: B
- In a nuclear reactor, heavy nuclei are not used as moderators because
- They will break up
- Elastic collision of neutrons with heavy nuclei will not slow them down
- The net weight of the reactor would be unbearably high
- Substances with heavy nuclei do not occur in liquid or gaseous state at room temperature
Correct Answer: B
- A radioactive element has a half-life of 15 years. What is the fraction that will decay in 30 years?
- 0.25
- 0.5
- 0.75
- 0.85
Correct Answer: C
Related Articles:
| KCET Electromagnetic Induction and Alternating Currents Weightage 2026 |
KCET Moving Charges and Magnetism Topics 2026
|
We hope this article has been helpful for the candidates to be aware of the KCET Nuclei Weightage 2026. If you are looking to secure admission into the top private engineering colleges in India 2026 , you can just fill out the Common Application Form on our website. It is a single application form for getting admission into various universities. For more articles and updates on KCET 2026, stay tuned with CollegeDekho.
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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 2025 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.
NCERT best books are a good choice for candidates to start if they want to prepare for the KCET 2025 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.
In KCET Physics, chapters such as Gravitation, Motion in a Straight Line, Oscillations, and Thermodynamics each contribute approximately 7% to 8% of the exam paper.
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.
The physics section holds a total number of 60 questions in the KCET 2025 exam. Applicants can easily score good marks from this section if they prepare well.
Yes, this chapter is regarded as a highly complex chapter in the second year PUC syllabus for physics. Applicants will have to study some of the core concepts like radioactivity, binding energy and these can be difficult to understand concepts.
Beginning with your preparations ahead of time will not let you feel the burden of any subject, make sure to start the preparations in advance. Take one subject at a time.
No , the nuclei chapter is not removed from the KCET 2025 syllabus. Applicants will have to prepare this chapter for the exam.
The nuclei chapter will hold the weightage of 5-6 questions in the KCET 2025 exam.
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