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BSEB
Class 12
Chemistry
Syllabus And Exam Pattern

BSEB Class 12 Chemistry Syllabus & Exam Pattern: Complete Guide (2026)

A strong understanding of Chemistry is essential for BSEB Class 12 Science students preparing for NEET, JEE, BCECE, B. Sc., Pharmacy, Agriculture, and a wide range of Technical fields. The best way to achieve a high score on the BSEB Class 12 Board Examination in 2026 is to read the latest BSEB Chemistry syllabus and exam pattern in detail. Students can achieve excellent marks by following a strategy for preparation, by revising regularly, and by practicing strategically.

This guide provides the Latest Syllabus, Unit-wise Topics, Marking Scheme, Marks Weightage Tips, and How to prepare for the Bihar Board Class 12 Chemistry Examination 2026. All students should consistently and constantly keep themselves updated with: https://biharboardonline

1.0Class 12 Chemistry Exam Pattern – BSEB 2026

The BSEB Chemistry examination is designed to check students understanding on a conceptual level; reactions; solving numerical problems; conducting practicals. The format of the exam has been adopted from an NCERT model, and maintains a coherent approach to how the questions relate to those that will be asked in competitive examinations.

2.0Overall Marks Distribution

Component

Marks

Details

Theory Exam

70

Written board paper

Practical + Internal

30

Experiments, viva, project, record

Total

100

Must pass both theory & practical

3.0Question Paper Pattern

The BSEB Chemistry theory paper has two major parts:

OMR Section (35 Marks)

  • 35 MCQs × 1 mark
  • Based on complete NCERT syllabus
  • Highly scoring

Written Section (35 Marks)

  • Short-answer questions (2 marks)
  • Medium-answer questions (3 marks)
  • Long-answer questions (5 marks)
  • Includes reactions, mechanisms, reasoning, & numerical problems

Important: Use correct chemical equations, neatly drawn diagrams, and well-structured answers for high marks.

4.0Unit-Wise Chemistry Syllabus – Bihar Board 2026

The BSEB Chemistry course is divided into four basic areas: Physical Chemistry; Inorganic Chemistry; Organic Chemistry and Applied Chemistry. This course covers what is considered essential foundational knowledge for NEET/JEE, making it an essential course for all students completing Class 12.

Unit-Wise Breakdown

Unit No.

Topic Name

1. Solid State

Crystal structure, unit cell types, packing efficiency, defects

2. Solutions & Colligative Properties

Raoult’s law, solubility, osmotic pressure, molarity vs molality

3. Chemical Thermodynamics

Enthalpy, entropy, spontaneity, Gibbs free energy

4. Electrochemistry

EMF, conductance, Nernst equation, galvanic & electrolytic cells

5. Chemical Kinetics

Order, molecularity, rate law, half-life, activation energy

6. Isolation of Elements

Metallurgy, refining processes, extraction steps

7. p-Block Elements

Group trends (15, 16, 17, 18), reactions & anomalies

8. Haloalkanes & Haloarenes

Preparation, reaction mechanisms (SN1, SN2, E1)

9. Alcohols, Phenols & Ethers

Classification, properties, reactions, conversions

10. Aldehydes, Ketones & Carboxylic Acids

Nucleophilic addition, naming, mechanisms

11. Amines

Basicity, preparation methods, diazonium salts

12. Biomolecules, Polymers & Chemistry in Daily Life

Carbohydrates, proteins, enzymes, polymer types

5.0Chapter Weightage & Paper Structure Tips

Official weightage of these subjects can vary from year to year, but these approximate weighting structures provide guidance for students.

High Numerical Weightage Units

  • Solutions & Colligative Properties
  • Electrochemistry
  • Chemical Kinetics
  • Thermodynamics

High Conceptual Weightage Units

  • Haloalkanes & Haloarenes
  • Aldehydes, Ketones, Carboxylic Acids
  • Amines

Quick-Revision Units

  • Biomolecules
  • Polymers
  • p-Block Elements

Tip: Organic Chemistry holds a significant share of the subjective questions — revise it weekly.
Practical Tip: Maintain neat records, accurate titration readings, and precise observation tables.

6.0How to Prepare Effectively for BSEB Chemistry 2026

By utilizing the strategies that have been shared, it is possible to achieve a score of 60+/70 on the theory portion and full score on the practical portion.

Maintain Chapter-Wise Summary Notes

Summaries help with quick revision and memory retention.

Practice Physical Chemistry Numericals Daily

Focus on formula application + units + stepwise procedure.

Revise Reaction Mechanisms Frequently

Organic Chemistry becomes easier with repeated practice.

Use Flowcharts & Mind Maps

Useful for polymers, biomolecules, p-block, & metallurgy.

Solve Past Year Papers & Model Sets

Train under real exam timing for better speed & accuracy.

Improve Diagrams, Equations & Answer Presentation

Neat writing and proper chemical notation boost marks.

Weekly Revision Routine

Avoid cramming; revise little but regularly.

Score Full in Practicals

Attend all practicals, maintain a clean record book, and prepare for viva questions.

Exam Guide for Biology

BSEB Class 12 Chemistry Exam Overview

BSEB Class 12 Chemistry Syllabus & Exam Pattern

BSEB Class 12 Chemistry Sample Papers

BSEB Class 12 Chemistry Previous Year Papers

BSEB Class 12 Chemistry Preparation Tips


MSBSHSE Class 12 All Subjects

BSEB Class 12 Biology

BSEB Class 12 Physics

BSEB Class 12 Maths


Other State Boards

Maharashtra – MSBSHSE

Bihar – BSEB

Madhya Pradesh – MPBSE

Uttar Pradesh – UPMSP


Test Prep Study Materials

Maths

Physics

Chemistry

Biology

JEE Previous Year Papers

JEE Sample Papers

JEE Mock Test

NEET Previous Year Papers

NEET Sample Papers

NEET Mock Test

Frequently Asked Questions

100 Marks = 70 Theory + 30 Practical/Internal

MCQs, Short answer, Numerical Problems, Based Reasoning Questions, Organic Mechanisms, and Descriptive.

Yes, practical, marks are usually much easier to score and very beneficial to increase your total marks or percentile.

Not if you regularly revise the organic mechanisms, conversions, and named reactions with practical examples.

Daily numerical problem solving, Weekly Organic Revision, Practice Previous Years' Questions (PYQs) Regular Short Notes Revision.

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