WBCHSE Class 11 Chemistry Syllabus 2024-25 PDF, Important Chapters
The WBCHSE Class 11 Chemistry Syllabus 2025 covers a detailed semester-wise structure, emphasizing important topics with specific weightage. WBCHSE Class 11 Chemistry Syllabus 2025 includes both theoretical concepts and practical to help the students preparing for the exams.
Praveen Kushwah23 Oct, 2024
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WBCHSE Class 11 Chemistry Syllabus 2024-25 is crucial for students as it lays the foundation for advanced studies in chemistry and other science-related fields. With exams expected to start around February to March 2025, students must prepare by focusing on both theoretical and practical elements.
The WBCHSE Class 11 Syllabus 2025 and the WBCHSE Class 11 Exam Pattern outline essential topics and weightage, helping students prioritize high-weightage chapters. Starting early and revisiting difficult concepts regularly will significantly improve your preparation and confidence heading into the exams.WBCHSE Class 11 Chemistry Semester Wise Syllabus
The WBCHSE Class 11 Chemistry syllabus is divided into two semesters. This syllabus is comprehensive and helps students grasp fundamental chemistry concepts. Below, you'll find detailed information in the table.WBCHSE Class 11 Chemistry Syllabus Semester I
Semester I covers essential topics in chemistry, including basic concepts, atomic structure, and chemical bonding. For detailed topics and marks distribution, refer to the table provided below.| WBCHSE Class 11 Chemistry Syllabus Semester I | |||
|---|---|---|---|
| Unit No. | Topics | Contact Hours | Marks |
| Unit 1 | Some Basic Concepts of Chemistry: Laws of chemical combination, the concept of elements, atoms, molecules, atomic and molecular masses, mole concept and molar mass, percentage composition, empirical and molecular formula, chemical reactions, stoichiometry and calculations based on stoichiometry, different concentration terms of solutions and related calculations. | 7 | 3 |
| Unit 2 | Structure of Atom: Bohr’s model and its limitations, concept of shell and sub-shells, dual nature of matter and light, de Broglie’s relationship, Heisenberg uncertainty principle, Schrödinger wave equation (elementary idea only), concept of orbitals, quantum numbers, shapes of s, p and d orbitals, rules for filling electrons in orbitals: Aufbau principle, Pauli exclusion principle and Hund’s rule, exchange energy, electronic configuration of atom, stability of half-filled and completely filled orbitals. | 12 | 6 |
| Unit 3 | Classification of Elements and Periodicity in Properties: Modern periodic law and the present form of the periodic table, periodic trends in properties of elements – atomic radii, ionic radii, van der Waals’ radii, ionization enthalpy, electron gain enthalpy, electronegativity, valency. Nomenclature of elements with atomic number greater than 100. | 7 | 4 |
| Unit 4 | Chemical Bonding and Molecular Structure: Valence electrons, ionic bond, bond parameters, covalent bond, Lewis structure, polar character of covalent bond, covalent character of ionic bond, valence bond theory, resonance, geometry of covalent molecules, VSEPR theory, the concept of hybridization involving s, p and d orbitals and shapes of some simple molecules; intermolecular interactions; Hydrogen bonding; Molecular orbital theory of homonuclear diatomic molecules (H2, He2, O2, N2, F2 – qualitative idea only). | 13 | 6 |
| Unit 5 | States of Matter — Solids and Gases: Classification of solids (elementary idea): molecular, ionic, covalent and metallic solids; amorphous and crystalline solids (elementary idea); unit cell in two-dimensional and three-dimensional lattices; packing efficiency; calculation of density of unit cell; packing in solids; voids; number of atoms per unit cell in a cubic unit cell; point defects. Kinetic theory of gas; molecular speeds; Dalton’s law of partial pressure; Graham’s law; deviation from ideal behaviour and van der Waals’ equation; liquefaction of gases; critical temperature. | 9 | 4 |
| Unit 6 | s-Block Elements (Group 1 and Group 2): Electronic configuration; occurrence; trends in the variation of properties (such as ionization enthalpy and atomic/ionic radii); trends in chemical reactivity with oxygen, water, hydrogen and halogens; hydrides (ionic, covalent and interstitial); hydrogen peroxide (preparation, properties, structure & use); hydrogen as a fuel; biological importance of Na, K, Mg, Ca. | 10 | 5 |
| Unit 7 | p-Block Elements (Group 13 and Group 14): General introduction to p-block elements; electronic configuration; occurrence; variation in properties; oxidation states; trends in chemical reactivity. Group 13: Boron: physical and chemical properties of compounds such as boron oxides and boric acid. Aluminium: reactions with acid/alkali. Group 14: Carbon: catenation; allotropic forms; nano carbon; physical/chemical properties of CO & CO2. Silicon: compounds with important uses. | 12 | 7 |
WBCHSE Class 11 Chemistry Syllabus Semester II
Semester II builds on the knowledge from Semester I, covering topics like chemical kinetics and thermodynamics. The detailed syllabus for this semester can be found in the table provided below.| WBCHSE Class 11 Chemistry Syllabus Semester II | |||
|---|---|---|---|
| Unit No. | Topics | Contact Hours | Marks |
| Unit 1 | Thermodynamics: Concepts of system (including types), surroundings; work; heat; energy; extensive/intensive properties; state function; Zeroth law of thermodynamics; first law (internal energy change ∆U) and enthalpy change ∆H; Hess’s law and Born Haber Cycle applications. Second law introduction to entropy as a state function. Gibbs energy change for spontaneous processes. Criteria for equilibrium. | 12 | 7 |
| Unit 2 | Equilibrium: Dynamic nature in physical/chemical processes; law of mass reaction; equilibrium constant factors affecting equilibrium – Le Chatelier’s principle; ionic equilibrium including strong/weak electrolytes. Buffer solutions and solubility product concepts with examples. | 10 | 6 |
| Unit 3 | Redox Reactions: Conceptual understanding including oxidation/reduction definitions and balancing redox reactions in terms of loss/gain electrons. Applications in permanganometry/dichromatometry. | 5 | 3 |
| Unit 4 | Organic Chemistry: Basic principles including classification/IUPAC nomenclature. Electronic displacements in covalent bonds: inductive effect/resonance/hyperconjugation. Types of organic reactions include addition/elimination/substitution reactions. | 12 | 7 |
| Unit 5 | Hydrocarbons: Classification including nomenclature/isomerism/conformations/physical properties/chemical reactions for alkanes/alkenes/alkynes/aromatic hydrocarbons including mechanisms for electrophilic substitution reactions. | 14 | 8 |
| Unit 6 | Environmental Chemistry: Pollution types (air/water/soil), primary/secondary pollutants (solid/liquid), smog effects from industrial wastes. Strategies for control include green chemistry concepts for pollution reduction. | 7 | 4 |
WBCHSE Class 11 Chemistry Syllabus PDF Download
Students preparing for the WBCHSE Class 11 exams can download the complete Chemistry syllabus in PDF format from the link provided below. This document contains all the necessary details and topics to cover for the academic session 2025. Stay updated with the WBCHSE Class 11 Syllabus 2025 and prepare accordingly for the exams.WBCHSE Class 11 Chemistry Syllabus PDF Download Link
WBCHSE Class 11 Chemistry Syllabus 2025 Important Topics
Students can find the key topics covered in the WBCHSE Class 11 Chemistry Syllabus 2025. These topics are crucial for preparing effectively for the upcoming exams.| WBCHSE Class 11 Chemistry Syllabus 2025 Important Topics | |||
|---|---|---|---|
| Unit No. | Topics | Contact Hours | Marks |
| Unit 1 | Some Basic Concepts of Chemistry: Laws of chemical combination, concept of elements, atoms, molecules, atomic and molecular masses, mole concept, stoichiometry, concentration terms. | 7 | 3 |
| Unit 2 | Structure of Atom: Bohr’s model, quantum numbers, shapes of s, p, d orbitals. | 12 | 6 |
| Unit 3 | Classification of Elements and Periodicity in Properties: Modern periodic law, periodic trends. | 7 | 4 |
| Unit 4 | Chemical Bonding and Molecular Structure: Ionic bond, covalent bond, VSEPR theory, hybridization. | 13 | 6 |
| Unit 5 | States of Matter — Solids and Gases: Classification of solids, gas laws. | 9 | 4 |
| Unit 6 | s-Block Elements (Group 1 and Group 2): Trends in properties and reactivity. | 10 | 5 |
| Unit 7 | p-Block Elements (Group 13 and Group 14): Properties and trends in reactivity. | 12 | 7 |
| Unit 8 | Thermodynamics: Concepts of system, first law of thermodynamics, Hess’s law, entropy concepts. | 12 | 7 |
| Unit 9 | Equilibrium: Dynamic nature, Le Chatelier’s principle, buffer solutions. | 10 | 6 |
| Unit 10 | Redox Reactions: Concepts of oxidation and reduction. | 5 | 3 |
| Unit 11 | Organic Chemistry: Basic principles and types of organic reactions. | 12 | 7 |
| Unit 12 | Hydrocarbons: Classification and properties of alkanes, alkenes, alkynes. | 14 | 8 |
| Unit 13 | Environmental Chemistry: Pollution types and control strategies. | 7 | 4 |
WBCHSE Class 11 Chemistry Syllabus FAQs
Q1: When will the WBCHSE Class 11 exams be conducted in 2025?
The WBCHSE Class 11 exams are generally held between February and March. For the 2025 session, the exams are expected to follow a similar schedule.
Q2: Where can I find the WBCHSE Class 11 Chemistry Syllabus 2025?
You can download the WBCHSE Class 11 Chemistry Syllabus 2025 from the official website of WBCHSE or from this article. It is essential to be aware of the updated syllabus for exam preparation.
Q3: Is there any significant change in the Chemistry syllabus for 2025?
As of now, no significant changes have been officially announced. Students should regularly check the WBCHSE website for any updates or modifications to the syllabus.
Q4: How can I prepare for the Class 11 Chemistry exam effectively?
To prepare effectively, focus on understanding the core concepts, practice chemical equations, and solve previous years' question papers. Pay special attention to high-weightage topics in organic and inorganic chemistry.
Q5: What should I do if I miss a practical exam for WBCHSE Class 11 Chemistry?
If you miss a practical exam, inform your school authorities immediately. In most cases, the school will arrange for a re-examination based on the Council's guidelines.
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