BSEB Class 12 Maths Syllabus & Exam Pattern: Complete Guide (2026)
Each academic session, the Bihar School Examination Board (BSEB) publishes the new Class 12 Maths syllabus and exam format to provide students with an adequate opportunity to efficiently plan their exam preparation based on the syllabus. The syllabus for the 2025–26 session has also been developed to provide more clarity to students on improving mathematical thinking, analytical thinking, and problem-solving while benefiting students in the areas of higher education and competitive exams (JEE, NDA, CUET, Polytechnic entrances and various state-level engineering exams).
Understanding the syllabus and the exam format is the first step towards having a smart plan for studying. Once students understand what to study, which chapters are more essential to study based on marks, and how questions are formed, speed and accuracy can increase in the exam. In the blog, a full guide to BSEB Class 12 Maths syllabus, marking scheme, weightage, timeline of chapters, and preparation tips to build confidence and diminish exam-related stress is available.
1.0What’s New in the BSEB Class 12 Maths Syllabus 2026
Every year, the Bihar School Examination Board (BSEB) modifies its Intermediate Maths syllabus according to NCERT Class 12 Mathematics. The syllabus 2026 resembles its predecessor but includes higher emphases on the applications of concepts, structured reasoning, and critical thinking. The syllabus features 7 key units consisting of Relations & Functions, Algebra, Calculus, Vectors, 3D Geometry, Linear Programming, and Probability, and all remain vital for the board exams and entrance exams.
The board also kept the evaluation structure of 100 marks; 50 marks for multiple-choice questions (MCQs) (OMR) and 50 Subjective answers. Students should note that Calculus, Algebra, and Probability comprise around 60% of the syllabus; therefore, these chapters' importance is far greater for revision. The question paper's assessment also covers stepwise marking, logical reasoning, algebraic manipulation, diagrammatic representation (in the cases of LPP and 3D Geometry), and clarity of problem solving.
2.0Complete BSEB Class 12 Maths Syllabus 2026 (Unit-Wise)
Below is the official unit-wise syllabus for Bihar Board Class 12 Mathematics:
Unit 1 — Relations and Functions
- Types of relations
- One-to-one, onto, bijection
- Composition of functions
- Inverse of functions
- Binary operations
Unit 2 — Algebra
- Matrices (Types, operations, inverse)
- Determinants (Properties, adjoint, applications in solving equations)
- Continuity and differentiability concepts linked with algebra
Unit 3 — Calculus
- Continuity and Differentiability
- Application of Derivatives (AOD)
- Integrals (Indefinite & Definite)
- Applications of Integrals (Area under curves)
- Differential Equations (Formation & solutions)
Unit 4 — Vectors
- Vector algebra
- Dot & cross product
- Scalar triple product
Unit 5 — Three-Dimensional Geometry
- Direction cosines & ratios
- Equation of lines & planes
- Angle between planes, lines, and normals
Unit 6 — Linear Programming
- Graphical method
- Feasible region
- Optimization problems
Unit 7 — Probability
- Conditional probability
- Bayes’ theorem
- Random variables
- Probability distributions
Important: Calculus is the largest unit — almost one-third of the question paper.
3.0BSEB Class 12 Maths Exam Pattern 2026
The BSEB follows a two-part evaluation format:
- 50 marks Objective (MCQs) — Attempted on OMR sheet
- 50 marks Subjective — Written answer sheet
Complete Exam Pattern Overview
Subjective Question Distribution (Expected)
Key Features of the Pattern
- Strict step-wise marking
- Neatness and logical structure rewarded
- MCQs cover entire syllabus, especially formulas
- Subjective section tests application and reasoning
4.0Chapter-Wise Marks Weightage (2026 Expected)
Here is the approximate weightage based on previous BSEB papers:
Highest-Weightage Units:
Calculus
Algebra
Probability
Students aiming for 90+ must revise these at least 3–4 times.
5.0How to Use the Syllabus & Pattern for Smart Preparation
Understanding the syllabus is not enough — students should know how to use it effectively.
Here’s how to maximize your preparation:
Step 1: Prioritize high-weightage chapters
Start with Calculus, Algebra, and Probability.
Step 2: Complete NCERT and BSEB textbook exercises
These form the base of MCQs and subjective questions.
Step 3: Make a formula notebook
Include:
- Derivatives
- Integration methods
- Properties of determinants
- Probability rules
Step 4: Solve previous year papers
Try completing 5–10 years of PYQs.
Step 5: Take weekly mock tests
Simulate exam environment with a 3-hour timer.
Step 6: Focus on step-wise solutions
Even if you get the final answer wrong, correct steps fetch marks.
Step 7: Revise regularly
Revising formulas repeatedly boosts memory retention.