WBCHSE Class 11 Chemistry Syllabus Pattern

Spread the love

WBCHSE Class 11 Chemistry Syllabus Exam Pattern is available here. Last Update : 10th Feb 2022.

Chemistry is an interesting topic that rewards students to learn and understand the complete chemical changes taking place in our life. Chemistry is one of the impotent subject of wbchse class 11 science. There are several main branches of chemistry such as organic chemistry, inorganic chemistry, physical chemistry, Environmental chemistry. The most effective way to get an overview of the topics and concepts taught in Class under the subject for the academic year is to have a look at the latest WBCHSE Class 11 Chemistry Syllabus.

WBCHSE Class 11 Chemistry Syllabus for the current academic year are designed by the subject experts on the basis of all important topics. The WBBSE Class 11 Chemistry Syllabus for the present academic year includes all the necessary and important topics including structure of atom, classification of elements and periodicity, S block elements, Thermodynamics, Equilibrium, Organic chemistry- basic principles and lot more.

We at ChemistryUP provide the syllabus for WBCHSE Class 11 Chemistry throughout with the mark-wise weightage for every chapter, so that students can have a great idea about the pattern of the exam.

As we writing this blog article the WBCHSE Class 11 Chemistry Syllabus will offer a fully customized idea about the subjects covered in class 11 for the school year of 2021-2022. Students can prepare their studies based on this curriculum.

Download West Bengal Board Class 11 Reduced Chemistry Syllabus 2021-22

The syllabus has been reduced for the academic year 2021-22. Find the details below:

Unit wise Marking Scheme

Unit NameMarks
Unit I: Some Basic Concepts of Chemistry04
Unit II: Structure of Atom06
Unit III: Classification of Elements and Periodicity in properties04
Unit IV: Chemical bonding and Molecular Structure05
Unit V: State of Matter; Gases and Liquids04
Unit VI: Thermodynamics06
Unit VII: Equilibrium06
Unit VIII: Redox Reactions03
Unit IX: Hydrogen03
Unit X: s-Block Elements05
Unit XI: Some p-Block Elements07
Unit XII: Organic Chemistry: some basic Principles and Techniques07
Unit XIII: Hydrocarbons10

Students of Class 11 West Bengal Board can go through the details of the reduced Chemistry syllabus 2021-22 given below:

Unit – I: Some Basic Concepts of chemistry

General Introduction: Importance and scope of chemistry.

Historical approach to particulate nature of matter, laws of chemical combination. Dalton’s atomic theory: concept of elements, atoms and molecules.

Atomic and molecular masses. Mole concept and molar mass: percentage composition, empirical and molecular formula; chemical reactions, stoichiometry and calculations based on stoichiometry.

Unit – II: Structure of atoms

Discovery of electrons, proton and neutron; atomic number, isotopes and isobars.

Rutherford’s model and its limitations. 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, 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, electronic configuration of atoms, stability of half filled, completely filled orbitals.

Unit – III: Classification of elements and Periodicity in Properties

Significance of classification, brief history of the development of periodic table. Modern periodic law and the present form of periodic table, periodic trends in properties of elements – atomic radii, ionic radii, Ionization enthalpy, election gain enthalpy, electronegativity valency, nomenclature of elements with atomic number greater than 100.

Unit – IV: Chemical Bonding and Molecular Structure

Valence electrons, ionic bond, bond parameters, covalent bond: Born Haber Cycle. Lewis structure, polar character of covalent bond, covalent character of ionic bond, valence bond theory, resonance, geometry of covalent molecules. VSEPR theory, concept of hybridization, involving s, p and d orbitals and shapes of some simple molecules, Molecular orbital theory of homonuclear diatomic molecules and hydrogen bond.

Unit – V: States Of Matter: Gases and Liquids

Three states of matter. Intermolecular interactions, types of bonding, melting and boiling points. Role of gas laws in elucidating the concept of the molecule. Boyle’s law, Charles’law, Gay Lussac’s Law, Avogadro’s Law, Ideal Behaviour, empirical derivation of gas equation. Avogadro’s number, Ideal gas equation. Derivation from ideal behaviour,

Liquefaction of gases, critical temperature, kinetic energy and molecular speeds (elementary idea)

Liquid state – vapour pressure, viscosity and surface tension (qualitative idea only, no mathematical derivations).

Unit – VI: Chemical Thermodynamics

Concepts of system, types of systems, surroundings. Work, heat, energy, extensive and intensive properties, state functions.

First law of thermodynamics – internal energy change ( U) and enthalpy change ( H). Hess’s law of constant heat summation, enthalpy of bond dissociation, combustion, formation, atomization, sublimation, Phase transformation, ionization, and solution.

Introduction of entropy as a state function, Gibbs energy change for spontaneous and non spontaneous processes, criteria for equilibrium. Second and third laws of thermodynamics.

Unit – VII: Equilibrium

Equilibrium in physical and chemical processes, dynamic nature of equilibrium, law of mass
action, equilibrium constant, factors affecting equilibrium – Le chatelier’s principle; ionic equilibrium – ionization of acids and bases, strong and weak electrolytes, degree of ionization of polybasic acids, acid strength, concept of pH Henderson Equation. Hydrolysis of salts (elementary idea).
Buffer solutions, solubility product, common ion effect ( with illustrative examples).

Unit – VIII: Redox Reactions

Concept of oxidation and reduction, red ox reactions, oxidation number, balancing redox reactions in terms of loss and gain of electrons and change in oxidation number.

Unit – IX: Hydrogen

Position of hydrogen in periodic table, occurrence, isotopes, preparation, properties and uses of hydrogen; hydrides – ionic, covalent and interstitial; physical and chemical properties of water, heavy water; hydrogen peroxide-preparation, properties, structure and use; hydrogen as a fuel.

Unit – X: s-Block Elements (alkali and Alkaline earth metals)

Group 1 and Group 2 elements: General introduction, electronic configuration, occurrence, anomalous properties of the first element of each group, diagonal relationship, trends in the variation of properties (such as ionization enthalpy, atomic and ionic radii), trends in chemical reactivity with oxygen, water, hydrogen and halogens; uses.

Preparation and properties of some important compounds: Sodium carbonate, sodium hydroxide and sodium hydrogen carbonate, biological importance of sodium and potassium. CaO, CaCO3 and industrial use of lime and limestone, biological importance of Mg and Ca

Unit –X I: Some p-Block Elements

General Introduction to p-Block Elements

Group 13 elements: General introduction, electronic configuration, occurrence. Variation of
properties, oxidation states, trends in chemical reactivity, anomalous properties of first element of the group; Boron – physical and chemical properties, some important compounds: borax, boric acid, boron hydrides, Aluminium: reactions with acids and alkalis and uses.

Group 14 elements: General introduction, electronic configuration, occurrence, variation of
properties, oxidation state, trends in chemical reactivity, anomalous behaviour of first element, carbon- catenation, allotropic forms, physical and chemical properties; uses of some important compounds; oxides.

Important compounds of silicon and a few uses: silicon tetrachloride, silicones, silicates and zeolites, their uses and structure of silicates.

Unit –XII: Organic chemistry – Some Basic Principles and Techniques

General introduction, methods of qualitative and quantitative analysis, classification and IUPAC nomenclature of organic compounds. Electronic displacements in a covalent bond: inductive effect, electrometric effect, resonance and hyper conjugation.

Homolytic and Heterolytic fission of a covalent bond: free radicals, carbocations, carbanions, electrophiles and nucleophiles, types of organic reactions.

Unit –XIII: Hydrocarbons *

Classification of hydrocarbons

Alkanes – Nomenclature, isomerism, conformations (ethane only), physical properties, chemical reactions including halogenations, free radical mechanism, combustion and pyrolysis.

Alkenes – Nomenclature, structure of double bond (ethene), geometrical isomerism, physical properties, methods of preparation; chemical reactions; addition of hydrogen, halogen, water, hydrogen halides (markovnikov’s addition and peroxide effect), ozonolysis, oxidation, mechanism of electrophilic addition.

Alkynes – Nomenclature, structure of triple bond (ethyne), physical properties. Methods of
preparation, chemical reactions; acidic character of Alkynes, addition reaction of hydrogen, halogens, hydrogen halides and water.

Aromatic hydrocarbons; Introduction, IUPAC nomenclature; Benzene; resonance aromaticity; chemical properties; mechanism of electrophilic substitution – nitration, sulphonation, halogenation, Friedel craft’s alkylation and acylation, carcinogenicity and toxicity.

Unit –XIV: Environmental chemistry

Environmental pollution – air, water and soil pollution, chemical reactions in atmosphere, smog, major atmospheric pollutants; acid rain, ozone and its reactions, effects of depletion of ozone layer, greenhouse effect and global warming – pollution due to industrial wastes; green chemistry as an alternative tool for reducing pollution, strategy for control of environmental pollution.

(* Unit VII and XIII are deleted for the academic year 2020-21)

(* Unit XIII are deleted for the academic year 2021-22) 

West Bengal Board Class 11 Chemistry Reduced Practical syllabus 2020-21

  1. Volumetric Analysis                   (Marks 10)
  2. Salt Analysis                                (Marks 08)
  3. Content Based Experiments     (Marks 06)
  4. Class Record or Viva-voce or Laboratory Performance in demonstration   (Marks 06)

A. Basic Laboratory Techniques(any one)                (Marks 03)

a) Cutting glass tube and glass rod

b) Bending a glass tube

c) Boring a cork


B. Purification of Chemical Substances

Crystallisation of impure sample, any one of the following-alum, copper sulphate      (Marks 03)

C. Quantitative Estimation(any one)                             (Marks 03)

a) Preparation of standard solution of Oxalic Acid

b) Preparation of standard solution of Sodium Carbonate

D. Volumetric Analysis(any one)                                  (Marks 10)

a) Determination of strength of a given solution of Sodium Hydroxide by titrating it against standard Oxalic Acid solution

b) Determination of strength of a given solution of Hydrochloric acid by titrating it against standard Sodium Carbonate solution

E. Qualitative Analysis                                                            (Marks 08)

Determination of one Anion and one Cation in a given salt:

F. Class Record or Laboratory Performance in demonstration                   (Marks 03)

G. Viva-voce                                                    (Marks 03)

Spread the love

Leave a Comment