Bihar Board Class 12 Chemistry Syllabus 2025-26, PDF Download

Bihar Board Class 12 Chemistry Syllabus 2025-26 Overview

Particulars

Details

Authority

Bihar School Examination Board (BSEB)

Class

12th

Subject

Chemistry

Syllabus

Class 12th Chemistry Syllabus 2025-26

Official Website

biharboardonline.com

Bihar Board Class 12 Chemistry Syllabus 2025-26 Unit Wise

1

Solid State

Classification of solids, unit cell, packing, voids, number of atoms per unit cell, point defects, electrical & magnetic properties

2

Solutions

Types of solutions, concentration, colligative properties, molecular mass determination, abnormal molecular mass

3

Electrochemistry

Redox reactions, conductivity, electrolytic & galvanic cells, EMF, Nernst equation, fuel cells, corrosion

4

Chemical Kinetics

Rate of reaction, factors affecting rates, order & molecularity, rate laws, integrated rate equations, collision theory

5

Surface Chemistry

Adsorption (physisorption & chemisorption), catalysis, colloids, emulsions, Tyndall effect, Brownian movement, coagulation

6

General Principles & Processes of Isolation of Elements

Extraction and refining of Al, Cu, Zn, Fe, principles of concentration, oxidation, reduction, electrolytic methods

7

Group I & II Elements

Abnormal properties, diagonal relationship, reactivity, atomic & ionic radii, ionization enthalpy

8

p-block Elements

Groups 15–18: Nitrogen, Phosphorus, Oxygen, Sulfur, Halogens, Noble gases; properties, compounds, industrial uses

9

d- & f-block Elements

Transition metals, lanthanoids, actinoids; electronic configuration, oxidation states, properties, K₂Cr₂O₇ & KMnO₄

10

Coordination Compounds

Ligands, coordination number, color, magnetic properties, shapes, Werner’s theory, VBT & CFT, isomerism, applications

11

Haloalkanes & Haloarenes

Nomenclature, C–X bond nature, substitution reactions, environmental effects (DDT, freons)

12

Alcohols, Phenols & Ethers

Preparation, nomenclature, physical & chemical properties, reactions, identification of alcohols, uses

13

Aldehydes, Ketones & Carboxylic Acids

Nomenclature, carbonyl group, preparation, properties, mechanisms, alpha hydrogen reactivity, uses

14

Organic Compounds Containing Nitrogen

Amines (primary, secondary, tertiary), cyanides, isocyanides, diazonium salts, reactions, applications

15

Biomolecules

Carbohydrates, proteins, enzymes, vitamins, nucleic acids; structure and functions

16

Polymers

Natural & synthetic polymers, polymerization methods, important examples (nylon, polythene, bakelite), biodegradable & non-biodegradable

17

Chemistry in Everyday Life

Chemicals in medicines, food, cleansing agents; uses and effects (antibiotics, preservatives, soaps, detergents)

Bihar Board Class 12 Chemistry Syllabus 2025-26 Exam Pattern

Question Type

Total Questions

Questions to Attempt

Marks per Question

MCQs

42

35

1

Short Answer (Subjective)

18

10

2

Long Answer (Subjective)

6

3

5

Bihar Board Class 12 Chemistry Syllabus 2025-26 for Practicals

S. No

Experiment Topic

Description

1

Preparation of Inorganic Compounds

Preparation of double salt of Ferrous Ammonium Sulphate or Potash Alum; Preparation of Potassium Ferric Oxalate

2

Electrochemistry

Variation of cell potential in Zn/Zn²⁺

3

Preparation of Organic Compounds

Preparation of any one of the following: Acetanilide, Di-benzal Acetone, p-Nitroacetanilide, Aniline yellow, 2-Naphthol, Aniline dye

4

Surface Chemistry

Preparation of one lyophilic sol (starch, egg albumin, gum); Preparation of one lyophobic sol (aluminium hydroxide, ferric hydroxide, arsenous sulphide); Dialysis of lyophilic sol; Study of emulsifying agents in stabilizing emulsions

5

Determination of concentration/molarity of KMnO₄

Titration against standard solutions of Oxalic acid or Ferrous Ammonium Sulphate (students prepare standard solutions themselves)

6

Thermochemistry

Any one: Enthalpy of dissolution of Copper Sulphate or Potassium Nitrate; Enthalpy of neutralization of HCl and NaOH; Enthalpy change during interaction between Acetone and Chloroform

7

Chemical Kinetics

Effect of concentration and temperature on reaction rate between Sodium Thiosulphate and HCl; Study of reaction rates for either: Iodide with Hydrogen Peroxide or KIO₃ with Na₂SO₃ (clock reaction)

8

Chromatography

Separation of pigments from leaves/flowers by paper chromatography and determination of Rf values; Separation of two cations in an inorganic mixture

9

Qualitative Analysis

Determination of one cation (Pb²⁺, Cu²⁺, Al³⁺, Fe³⁺, Mn²⁺, Zn²⁺, Co²⁺, Ni²⁺, Ca²⁺, Sr²⁺, Ba²⁺, Mg²⁺, NH₄⁺) and one anion (CO₃²⁻, S²⁻, SO₃²⁻, SO₄²⁻, NO₂⁻, Cl⁻, Br⁻, I⁻, PO₄³⁻, C₂O₄²⁻, CH₃COO⁻)

10

Characteristic Tests

Tests for carbohydrates, fats, and proteins in pure samples and foodstuffs

11

Functional Group Tests

Tests for unsaturation, alcoholic, phenolic, aldehydic, ketonic, carboxylic, and primary amino groups in organic compounds

Bihar Board Class 12 Chemistry 2025-26 Practical Exam Pattern

Evaluation Scheme

Marks

Volumetric Analysis

8

Salt Analysis

8

Project Work

4

Content-Based Experiment

6

Class Record and Viva

4