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CSIR NET Chapter Wise Weightage 2025 is an important factor in the exam. It is important for the candidates to note the CSIR NET 2025 chapter wise weightage as it will help them score more.
Furthermore, the chapter-wise weightage of CSIR NET 2025 will ensure that the students focus on the topics according to its weightage. The weightage of chapters in CSIR NET 2025 is decided by the Council of Scientific and Industrial Research, HRDG.
The CSIR NET 2025 exam was conducted on July 28, 2025, for June session. The CSIR NET subject wise weightage 2025 is distributed in Life Sciences, Physical Sciences, Chemical Sciences, Mathematics, and Earth, Atmospheric, Ocean & Planetary Sciences. The weightage of subjects in CSIR NET 2025 is dependent on the CSIR NET 2025 weightage of marks.
Practice Now: CSIR NET Previous Year Question Papers
CSIR NET Chapter Wise Weightage 2025
CSIR NET chapter wise weightage 2025 aids the aspirants in allocating time equally among the subjects. The number of questions also varies in accordance with the CSIR NET 2025 chapter wise weightage.
Along with knowing the subject wise weightage of CSIR NET 2025, it is important that candidates also practice solving the CSIR NET previous years' question papers. Candidates are advised to check CSIR NET Syllabus 2025 for each subject as this will help them to better prepare for the exam.
Subject Wise Weightage of CSIR NET 2025
The CSIR NET chapter wise weightage 2025 plays a crucial role in the apsirants' preparation strategy and understanding the CSIR NET Exam Pattern 2025. It is recommended that the candidates learn about the various CSIR NET 2025 subject wise weightage at the beginning of the preparation journey.
The exam will be held for a total of 200 marks. Candidates will be awarded two marks for each correct answer. However, there is also a negative marking of 25%.
The chapter wise weightage of CSIR NET 2025 is for subjects Life Sciences, Physical Sciences, Chemical Sciences, Mathematics, and Earth, Atmospheric, Ocean & Planetary Sciences.
Candidates must be mindful of the subject wise weightage of the CSIR NET 2025.
CSIR NET Subject Wise Weightage 2025
The subject wise weightage of CSIR NET 2025 is equally important as the CSIR NET chapter wise weightage 2025. The details of CSIR NET 2025 subject wise weightage are given below in the following tabulated data:
| Subjects | CSIR NET Weightage 2025 Marks |
| Physical Sciences | 200 |
| Chemical Sciences | 200 |
| Life Sciences | 200 |
| Mathematics | 200 |
| Earth Sciences | 200 |
Candidates can get the CSIR NET Books 2025 for each subject.
CSIR NET 2025 Marking Scheme
The below tabulated shows the marking scheme for the CSIR NET 2025 examination:
| Subjects | Marks Awarded for Each Correct Answer | Marks Deducted for Each Incorrect Answer |
| Physical Sciences |
Part A: +2 | Part A: -0.5 |
| Part B: +3.5 | Part B: -0.875 | |
| Part C: +5 | Part C: -1.75 | |
| Chemical Sciences | Part A: +2 | Part A: -).5 |
| Part B: +2 | Part B: -0.5 | |
| Part C: +4 | Part C: -1 | |
| Life Sciences |
Part A: +2 | Part A: -0.5 |
| Part B: +2 | Part B: -0.5 | |
| Part C: +4 | Part C: -1 | |
| Mathematics |
Part A: +2 | Part A: -0.5 |
| Part B: +3 | Part B: -0.75 | |
| Part C: +4.75 | Part C: No Negative Marking | |
| Earth Sciences | Part A: +2 | Part A: -0.5 |
| Part B: +2 | Part B: -0.5 | |
| Part C: +4 | Part C: -1 |
CSIR NET 2025 Weightage: Total Number of Questions
The exam authorities have specific CSIR NET weightage 2025 along with CSIR NET chapter wise weightage 2025. Candidates can follow the below table for the CSIR NET 2025 subject wise weightage in terms of the total number of questions:
| Part | Total Number of Questions |
| Physical Sciences | |
| Part A | 20 |
| Part B | 25 |
| Part C | 30 |
| Total Number of Questions | 75 |
| Chemical Sciences | |
| Part A | 20 |
| Part B | 40 |
| Part C | 60 |
| Total Number of Questions | 120 |
| Mathematics | |
| Part A | 20 |
| Part B | 40 |
| Part C | 60 |
| Total Number of Questions | 120 |
| Life Sciences | |
| Part A | 20 |
| Part B | 50 |
| Part C | 75 |
| Total Number of Questions | 145 |
| Earth Sciences | |
| Part A | 20 |
| Part B | 50 |
| Part C | 80 |
| Total Number of Questions | 150 |
CSIR NET 2025 Chapter Wise Weightage
The CSIR NET chapter wise weightage 2025 plays an integral part in evaluating the candidates' marks on the exam. Hence, they must be thorough with the chapter wise weightage of the CSIR NET 2025.
CSIR NET Physical Sciences Chapter Wise Weightage 2025
Candidates can follow the below table for the CSIR NET 2025 chapter wise weightage of Physical Sciences:
| Chapter | Total Number of Questions (Expected Weightage) |
| Solid State + Phase | 9-10 |
| Physical Spectroscopy | 9-10 |
| Group Theory | 9-10 |
| Surface + Polymer | 11-12 |
| Chemical + Stat Thermo | 14-15 |
| Electrochemistry | 11-12 |
| Chemical Kinetics | 13-14 |
| Quantum | 19-20 |
CSIR NET 2025 Chemical Sciences Chapter Wise Weightage
Aspirants can follow the below tabulated data to gauge the CSIR NET chapter wise weightage 2025 for Chemical Sciences:
| Chapter | Total Number of Questions (Expected Weightage) |
| Stereochemistry | 10-11 |
| Reaction Mechanism + R.I | 24-25 |
| Reagents | 22-23 |
| Pericyclic + Photochemistry | 17-18 |
| Biomolecules | 9-10 |
| Named Reactions | 10-11 |
| Organic Spectroscopy | 15-16 |
| Heterocyclic Chemistry | 7-8 |
| Chemical Bonding | 9-10 |
| Bioinorganic chemistry | 8-9 |
| Organometallic Chemistry | 24-25 |
| Main Block | 11-12 |
| Coordination Chemistry | 21-22 |
CSIR NET Mathematics Chapter Wise Weightage 2025
Aspirants can refer to the table below to understand the weightage of chapters in CSIR NET for Mathematics 2025:
| Chapter | Total Number of Questions (Expected Weightage) |
| Linear Algebra | 15-20 |
| Topology | 1-2 |
| Number Theory | 1-2 |
| Operation Research(LPP) | 0-2 |
| Complex Analysis | 5-8 |
| Ordinary Differential Equation | 4-7 |
| Classical Mechanics | 0-2 |
| Partial differential Equation(PDE) | 4-7 |
| Integral Equation | 1-3 |
| Real Analysis | 15-20 |
| Dynamical System | 0-2 |
| Markov chain | 1-3 |
| Abstract Algebra | 6-8 |
| Calculus of Variation(cov) | 1-2 |
CSIR NET 2025 Earth Sciences Chapter Wise Weightage
For the weightage of chapters in CSIR NET 2025 for Earth Sciences, candidates can follow the table below:
| Chapter | Total Marks (Expected Weightage) |
| Metrology | 40-45 |
| Oceanography | 60-65 |
| Geomorphology | 15-20 |
| Atmospheric Science | 30-50 |
| Geophysics | 50-55 |
CSIR NET Life Sciences Chapter Wise Weightage 2025
Aspirants can refer to the table below to learn about the weightage of chapters in CSIR NET 2025 for Life Sciences:
| Chapter | Total Number of Questions (Expected Weightage) |
| Cell Communications and Cell Signaling | 12 |
| System Physiology – Plant | 12 |
| Biochemistry | 8 |
| Fundamental Processes | 30 |
| Diversity of Life Forms | 18 |
| Ecological Principles | 8-9 |
| Cellular Organisation | 8 |
| System Physiology – Animal | 7 |
| Methods in Biology | 11 |
| Developmental Biology | 10 |
| Applied Biology | 10 |
| Evolution and Behavior | 9 |
| Inheritance Biology | 10 |
Conclusion
Understanding the subject-wise weightage in CSIR NET 2025 plays a crucial role in shaping an effective preparation strategy. By focusing on high-weightage topics and sections, candidates can optimize their study time and improve their chances of scoring well in the exam. Regular analysis of previous year trends and topic distribution helps in identifying scoring areas and minimizing weak points. Stay updated with the official syllabus and practice accordingly to perform confidently in the exam.
