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Assam Board Class 12th Science Syllabus 2026-27: Subject-Wise Topics

The Assam Board Class 12th Science Syllabus outlines key topics, units, and mark distribution for major science subjects. Students can review topics, plan structured routines, and download the syllabus PDF to score top marks in final board exams.
authorImageNeha Tanna27 Sept, 2026
Assam Board Class 12th Science Syllabus

Understanding the Assam Board Class 12th Science Syllabus is vital for every student preparing for the upcoming board examinations. 

The Assam Higher Secondary Education Council (AHSEC) designs this curriculum to build strong fundamental knowledge. It covers core subjects like Physics, Chemistry, Mathematics, and Biology. Knowing the exact syllabus helps you plan your study schedule smartly and focus on high-weight topics. It also prevents wasting time on topics outside the curriculum. Studying according to the official curriculum ensures high confidence and better academic scores.

Assam Board Class 12th Science Syllabus Overview

The HS 2nd Year Science Syllabus 2027 provides a structured path for students. It balances theory and practical sessions across all disciplines.

Subject

Total Marks

Core Focus Areas

Physics

100 (70 Theory + 30 Practical)

Electrostatics, Optics, Modern Physics

Chemistry

100 (70 Theory + 30 Practical)

Physical, Inorganic, and Organic Chemistry

Mathematics

100 (80 Theory + 20 Internal)

Calculus, Algebra, Vectors, Probability

Biology

100 (70 Theory + 30 Practical)

Genetics, Ecology, Reproduction, Biotechnology

Assam Board Class 12th Science Subject-Wise Syllabus

This section covers detailed units for all major science stream subjects. Students must review these topics carefully to build a solid revision plan.

Assam Board Class 12th Physics Syllabus

Physics covers conceptual theory, experimental observations, and numerical problem-solving across various physical domains.

Unit Name

Major Topics

Electrostatics

Electric Charges, Fields, Electrostatic Potential, Capacitance

Current Electricity

Electric Current, Ohm's Law, Kirchhoff's Laws

Magnetic Effects of Current

Biot-Savart Law, Ampere's Law, Magnetism

Optics

Ray Optics, Optical Instruments, Wave Optics

Modern Physics

Dual Nature of Matter, Atoms, Nuclei, Semiconductor Devices

Assam Board Class 12th Chemistry Syllabus

Chemistry balances theoretical principles with practical application across three primary sub-branches.

Unit Name

Major Topics

Solutions

Types of Solutions, Colligative Properties, Henry's Law

Electrochemistry

Galvanic Cells, Nernst Equation, Conductance

Chemical Kinetics

Rate of Reaction, Order, Molecularity, Arrhenius Equation

d and f Block Elements

Transition Metals, Lanthanoids, Actinoids

Organic Compounds

Haloalkanes, Alcohols, Aldehydes, Ketones, Amines, Biomolecules

Assam Board Class 12th Mathematics Syllabus

Mathematics emphasises analytical techniques, logical proofs, and algebraic problem-solving methods.

Unit Name

Major Topics

Relations and Functions

Types of Relations, Inverse Trigonometric Functions

Algebra

Matrices, Determinants, Consistency of Linear Systems

Calculus

Continuity, Differentiability, Integrals, Differential Equations

Vectors and 3D Geometry

Direction Cosines, Lines and Planes in Space

Probability

Conditional Probability, Bayes' Theorem

Assam Board Class 12th Biology Syllabus

Biology explores the living world, ecological structures, and advanced cellular processes.

Unit Name

Major Topics

Reproduction

Sexual Reproduction in Plants, Human Reproduction

Genetics and Evolution

Heredity, Molecular Basis of Inheritance, Evolution

Biology in Human Welfare

Human Health and Diseases, Microbes in Human Welfare

Biotechnology

Principles, Processes, Applications in Health and Agriculture

Ecology and Environment

Organisms, Populations, Ecosystems, Biodiversity Conservation

How to Prepare Assam Board Class 12th Science Syllabus?

Students need a clear strategy to complete the Class 12 AHSEC Science 2027 syllabus efficiently. Follow these essential tips to organise your daily preparation:

  • Review the complete Syllabus of Class 12 Science AHSEC 2026-27 to identify high-weight units.

  • Create a realistic study timetable with balanced time slots for each subject.

  • Solve past year question papers to understand question patterns and time constraints.

  • Practice derivations and numerical problems daily to gain speed and precision.

  • Make short revision notes for formulas, definitions, and chemical reactions.

 The Assam Board Class 12th Science Syllabus 2026-27 provides a subject-wise overview of important topics, units, and marks. Students should review the syllabus carefully to understand the curriculum and create an effective study plan. 

 Regular revision, solving practice questions, and focusing on key concepts can help students prepare systematically for their board examinations. 

 

Assam Board Class 12th Science Syllabus FAQs

What are the passing marks for Class 12 Science subjects?

Students must secure at least 30% marks in both theory and practical exams separately to pass.

Where can students download the updated Assam Board Class 12th Science Syllabus?

Students can download the official syllabus PDF directly from the AHSEC official website or through the link provided above.

Does the AHSEC Class 12 Science exam contain practical assessments?

Yes, subjects like Physics, Chemistry, and Biology carry 30 marks for practical examinations and 70 marks for theory papers.
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