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KCET Nuclei Weightage 2025

KCET Nuclei Weightage 2025 is expected to be 6%. Test takers can expect 5 to 6 questions from this chapter in the KCET 2025 exam. Candidates can also check the KCET Nuclei important topics here.
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KCET Nuclei Weightage 2025 is expected to be 6% of the Physics Section. Candidates can expect 5 to 6 questions on this topic in the KCET 2025 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 2025 exam should master all the topics to obtain 6% of the weightage of this chapter.

To obtain good marks in the KCET 2025 exam, students should thoroughly prepare all the topics included in the KCET syllabus 2025 . Solving the KCET Previous Year Question Papers will aid aspirants in obtaining good scores in the KCET 2025 exam . We have provided the complete information on KCET 2025 Nuclei Weightage along with the previous year's questions here.

Also Read: KCET 2025 Preparation Tips

Expected KCET Nuclei Weightage 2025

Aspirants can refer to the table here to understand the KCET 2025 Nuclei Weightage.

Chapter

Number of Questions

Weightage in Percentage

Nuclei

5-6 Questions

6

KCET 2025 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

  • Radioactivity
  • Nuclear Fission & Nuclear Fusion
  • Mass Defect and Binding Energy Explanation
  • Isobars, Isotones, & Isotopes
  • Atomic Mass Unit Definitionradioactivity
  • Nuclear Fission & Nuclear Fusion
  • Mass Defect and Binding Energy Explanation
  • Isobars, Isotones, & Isotopes
  • Atomic Mass Unit Definition

5-6

Important Topics of KCET 2025 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 2025 Nuclei

KCET aspirants can check the best books while studying the Nuclei chapter

  1. NCERT books of Classes 11&12
  2. Physics for Karnataka CET & COMEDK
  3. Fundamentals of Physics by S Chand
  4. 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.

  1. 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

  1. 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

  1. 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

  1. 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:

We hope this article has been helpful for the candidates to be aware of the KCET Nuclei Weightage 2025. If you are looking to secure admission into the top private engineering colleges in India 2025 , 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 2025, stay tuned with CollegeDekho.

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FAQs

What is the KCET cutoff?

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.

Can I give the KCET exam without Biology?

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.

What are the passing marks in the KCET exam?

50% mark is the passing percentage for the general category candidates and 40% for the SC/ST/OBC category for the KCET exam.

Is cracking the KCET exam easy?

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.

Can I skip Mathematics in the KCET exam?

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.  

Is PYQ enough for the KCET exam?

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.  

Is NCERT enough for the KCET exam?

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.  

Is KCET tougher than the JEE Main 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.  

What are the highest weightage chapters in KCET Physics 2025?

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.  

Which chapter has more weightage in the KCET exam?

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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