NSEB 2026 is an important Biology Olympiad exam for higher secondary students, mainly for Classes 11 and 12, and serves as the first stage for selection towards the International Biology Olympiad (IBO). The exam is organised by the Association of Teachers in Biological Sciences along with IAPT and HBCSE. NSEB 2026 is expected to be conducted on 23 November 2026 from 2:30 PM to 4:30 PM at exam centres across India.
Physics Wallah helps students prepare for NSEB through concept-focused classes, regular practice, mock tests, and experienced faculty guidance. With live and recorded learning support, students can improve accuracy, strengthen Biology concepts, and prepare with better consistency.
Keeping track of NSEB 2026–27 important dates is important for students planning their Olympiad preparation seriously. From registration and enrolment to the exam and result announcement, every update helps students stay prepared and manage their study schedule effectively alongside regular practice and revision.
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NSEB 2026 Event |
Expected Date |
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Centre Registration Start Date |
1st August 2026 |
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Last Date for Centre Registration |
20th August 2026 |
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Student Enrolment Start Date |
21st August 2026 |
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Student Enrolment Last Date |
14th September 2026 |
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NSEB Exam Date 2026 |
23rd November 2026 (2:30 PM to 4:30 PM) |
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NSEB Result 2026 |
23rd December 2026 |
Students who want to appear for NSEB 2026 must fulfill the required eligibility conditions before applying.
Applicant must be an Indian citizen.
Students of Class 11 and 12 can apply.
Date of birth should be between 1 July 2006 and 30 June 2011 (inclusive).
The student must be studying in an Indian school and residing in India.
Candidates should not have passed Class 12 before 30 November 2026.
Candidates should not have started university studies before 1 June 2026.
Students appearing for NSEJS 2026 are not eligible for NSEB 2026.
The NSEB registration 2026 process will be conducted through the IAPT (Indian Association of Physics Teachers) website. Eligible students can complete the application form online after checking the required eligibility conditions.
Students who want to appear for NSEB 2026 must complete the registration process before the last date. Registration can be done through authorized NSEB centers or through the official IAPT website. Students can also choose their preferred exam language, either English or Hindi, during the application process.
Step 1: Find the nearest NSEB exam center authorized by IAPT.
Step 2: Collect the application form from the center coordinator and fill in the required details carefully.
Step 3: Students can also apply online through the official IAPT registration link.
Step 4: Submit the required details and documents while filling out the form.
Step 5: Pay the registration fee of ₹300 to complete the application process.
Step 6: After successful registration, students can download the NSEB admit card once it is officially released.
Step 7: The registration fee is charged only once. No extra fee is required for further stages if the student qualifies for the next level.
Students must pay the required registration fee while completing the NSEB 2026 application process. The fee can be paid through online or offline mode during registration and is non-refundable in nature.
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Particulars |
Details |
|
NSEB Registration Fee |
₹300 |
|
Payment Mode |
Online & Offline |
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Fee Type |
One-Time Payment |
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Refund Policy |
Non-Refundable |
|
Fee Payment Stage |
During Registration Process |
|
Registration Through |
School or Registered NSEB Centre |
Students who qualify for the next stages of the olympiad selection process are not required to pay additional fees later.
Knowing the NSEB 2026 exam pattern helps students prepare in a more organised way and understand the structure of the examination clearly. Important details like exam duration, question format, syllabus level, marking scheme, and total questions can help students plan their practice and improve time management during preparation.
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Particulars |
Details |
|
Exam Duration |
2 Hours |
|
Syllabus Level |
Senior Secondary Level (up to Class 12 CBSE) |
|
Exam Language |
English & Hindi |
|
Question Type |
Objective Type Multiple Choice Questions (MCQs) |
|
Sections |
Two Parts |
|
Total Questions |
60 MCQs |
|
Total Marks |
216 Marks |
Understanding the NSEB syllabus early helps you plan your preparation in the right direction and avoid wasting time on less important topics. Since NSEB questions are concept-based and application-oriented, having clear knowledge of the syllabus can improve your revision, practice, and overall preparation strategy.
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Chapters |
Topics Included |
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Diversity of Living |
Living World, Biological Classification, Plant Kingdom, Animal Kingdom |
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Structural Organisation in Plants and Animals |
Morphology and Anatomy of Flowering Plants, Structural Organisation in Animals |
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Cell: Structure and Function |
Cell Theory, Biomolecules, Cell Cycle, Cell Division |
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Plant Physiology |
Transport in Plants, Mineral Nutrition, Photosynthesis, Respiration, Plant Growth and Development |
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Human Physiology |
Digestion, Breathing, Circulation, Excretion, Movement, Nervous System, Hormones |
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Reproduction in Organisms |
Types of Reproduction, Sexual and Asexual Reproduction, Fertilization |
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Sexual Reproduction in Flowering Plants |
Flower Structure, Pollination, Double Fertilization, Seed and Fruit Formation |
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Human Reproduction |
Reproductive Systems, Gametogenesis, Menstrual Cycle, Pregnancy, Lactation |
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Reproductive Health |
Birth Control, STDs, MTP, Infertility Treatments |
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Principles of Inheritance and Variation |
Genetics, Mendel’s Laws, Sex Determination, Mutations |
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Molecular Basis of Inheritance |
DNA & RNA, Replication, Transcription, Translation, Human Genome Project |
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Evolution |
Darwin Theory, Natural Selection, Genetic Drift, Hardy-Weinberg Principle |
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Human Health and Diseases |
Immunity, Diseases, Health Maintenance, Drug and Alcohol Abuse |
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Strategies for Enhancement in Food Production |
Plant Breeding, Tissue Culture, Animal Husbandry, Apiculture |
|
Microbes in Human Welfare |
Food Production, Sewage Treatment, Biofertilizers, Antibiotics |
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Biotechnology: Principles and Processes |
Genetic Engineering, Recombinant DNA Technology |
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Biotechnology and Its Applications |
Biotechnology in Agriculture and Health |
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Organisms and Populations |
Habitat, Population Interactions, Ecological Adaptations |
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Ecosystem |
Energy Flow, Ecological Succession, Nutrient Cycles |
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Biodiversity and Conservation |
Biodiversity Importance, Conservation Methods |
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Environmental Issues |
Pollution, Waste Management, Climate Change, Deforestation, Ozone Depletion |
Preparing for NSEB 2026 becomes easier when you combine concept learning with regular practice and smart study habits. Small daily improvements, proper revision, and consistent problem-solving can make a big difference during Olympiad preparation.
Study Biology Beyond Memorisation: Instead of only learning definitions, try to understand why biological processes happen and how different concepts are connected.
Read NCERT Line by Line: Many NSEB questions are directly linked to NCERT concepts, diagrams, examples, and scientific terms from Classes 11 and 12 Biology.
Make Diagram-Based Notes: Prepare short notes with labelled diagrams, cycles, and flowcharts to revise complex topics quickly before tests.
Solve Questions After Every Topic: Do not wait for syllabus completion. Practising MCQs after each chapter helps improve retention and application skills.
Maintain a Mistake Notebook: Write down repeated mistakes, confusing concepts, and tricky questions so you can revise them regularly and avoid repeating errors.
Give Time to Difficult Chapters: Topics like Genetics, Plant Physiology, Ecology, and Human Physiology often need deeper understanding and repeated revision.
Practise Time-Limited Tests: Attempt chapter-wise and full-length tests within fixed time limits to improve speed, concentration, and exam temperament.
Revise Regularly Instead of Studying Long Hours: Consistent revision for shorter durations is usually more effective than studying continuously without revision.
Learn Through Mock Test Analysis: Enroll in a test series, such as by PW, and after every mock test, spend time understanding why answers were wrong instead of only checking scores.