CBSE Class 11 Chemistry Syllabus 2022-23 PDF | Theory, Practical Syllabus

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Download CBSE Grade 11 Chemistry Theory Syllabus 2021-22

CBSE Class 11th Chemistry Practical Syllabus

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Unit I: Some Basic Concepts of Chemistry

This chapter will take 12 periods.

• General Introduction: Importance and scope of Chemistry.
• Nature of matter, laws of chemical combination, Dalton’s atomic theory: the 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.

(Deleted topics in class 11 chemistry syllabus CBSE unit 1 is struck out)

Unit II: Structure of Atom

This Unit will take 14 Periods.

• Discovery of Electron, Proton, and Neutron, atomic number, isotopes, and isobars.
• Thomson’s model and its limitations.
• Rutherford’s model and its limitations,
• Bohr’s model and its limitations,
• concept of shells and subshells, 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’s exclusion principle and Hund’s rule,
• electronic configuration of atoms,
• stability of half-filled and completely filled orbitals.

(The deleted portion in the class 11 chemistry syllabus 2021-22 unit 2 is struck out)

Unit III: Classification of Elements and Periodicity in Properties

This Unit will take 08 Periods.

• Significance of classification,
• a brief history of the development of periodic table,
• modern periodic law and the present form of the periodic table,
• periodic trends in properties of elements -atomic radii, ionic radii, inert gas radii, Ionization enthalpy, electron gain enthalpy, electronegativity, valency.
• Nomenclature of elements with atomic numbers greater than 100.

(The deleted portion in class 11 chemistry syllabus unit 3 is struck out)

Unit IV: Chemical Bonding and Molecular Structure

This Unit will take 14 Periods.

• Valence electrons, ionic bond, covalent bond, bond parameters,
• Lewis structure, the polar character of a covalent bond, the covalent character of an ionic bond,
• valence bond theory, resonance, the geometry of covalent molecules,
• VSEPR theory, the concept of hybridization, involving s, p, and d orbitals and shapes of some simple molecules,
• molecular orbital theory of homonuclear diatomic molecules(qualitative idea only),
• Hydrogen bond.

No portion is deleted from this unit

Unit V: States of Matter: Gases and Liquids

This Unit will take 12 Periods

• Three states of matter, intermolecular interactions, types of bonding, melting and boiling points, the role of gas laws in elucidating the concept of the molecule,
• Boyle’s law, Charles law, Gay Lussac’s law, Avogadro’s law,
• ideal behavior, empirical derivation of gas equation,
• Avogadro’s number, ideal gas equation.
• Deviation from ideal behavior, liquefaction of gases, critical temperature, kinetic energy, and molecular speeds (elementary idea),
• Liquid State- vapor pressure, viscosity, and surface tension (qualitative idea only, no mathematical derivations)

(Deleted topics in class 11 chemistry syllabus unit 5th is struck out)

Unit VI: Chemical ThermodynamicsThis Unit will take 16 Periods.

• Concepts of Systems and types of systems, surroundings, work, heat, energy, extensive and intensive properties, state functions.
• The first law of thermodynamics -internal energy and enthalpy, heat capacity and specific heat, measurement of U and H, Hess’s law of constant heat summation, enthalpy of bond dissociation, combustion, formation, atomization, sublimation, phase transition, ionization, solution, and dilution.
• Second law of Thermodynamics (brief introduction) Introduction of entropy as a state function, Gibb’s energy change for spontaneous and nonspontaneous processes, criteria for equilibrium.
• Third law of thermodynamics (brief introduction).

(Deleted Chapter in syllabus of CBSE class 11th Chemistry unit 6th is struck out)

Unit VII: EquilibriumThis Unit will take 14 Periods.

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

(Deleted Chapter in NCERT syllabus for class 11 chemistry unit 7th is struck out)

Unit VIII: Redox ReactionsThis Unit will take 06 Periods.

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

(Deleted topics in NCERT syllabus for class 11 chemistry unit 8th is struck out)

Unit IX: HydrogenThis Unit will take 08 Periods.

• Position of hydrogen in the 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,
• reactions and structure and use; hydrogen as a fuel

(Deleted topics in class 11 chemistry syllabus 2021-22 unit 9th is struck out)

Unit X: s-Block Elements (Alkali and Alkaline Earth Metals)This Unit will take 10 Periods.

• 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 Chloride, Sodium Hydroxide and Sodium Hydrogen carbonate, Biological importance of Sodium and Potassium.
• Calcium Oxide and Calcium Carbonate and their industrial uses, biological importance of Magnesium and Calcium.

(Deleted Chapter in the class 11 chemistry syllabus unit 10 is struck out)

Unit XI: Some p-Block ElementsThis Unit will take 14 Periods.

• General Introduction to p -Block Elements
• Group 13 Elements: General introduction, electronic configuration, occurrence, a variation of properties, oxidation states, trends in chemical reactivity, anomalous properties of a first element of the group,
  • Boron – physical and chemical properties, some important compounds:
  • Borax, Boric acid, Boron Hydrides, Aluminium:
  • Reactions with acids and alkalis use.
• Group 14 Elements: General introduction, electronic configuration, occurrence, a variation of properties, oxidation states, trends in chemical reactivity, anomalous behavior of first elements. 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.
• New formulations and nomenclature of elements and compounds, symbols, and units of physical quantities floated by scientific bodies like IUPAC and CGPM are also incorporated in the updated CBSE class 11 chemistry syllabus.

(Deleted Chapter in the class 11 chemistry syllabus NCERT unit 11 is struck out)

Unit XII: Organic Chemistry -Some Basic Principles and TechniquesThis Unit will take 14 Periods.

• General introduction, methods of purification, qualitative and quantitative analysis, classification, and IUPAC nomenclature of organic compounds.
• Electronic displacements in a covalent bond: inductive effect, electromeric effect, resonance, and hyperconjugation.
• Homolytic and heterolytic fission of a covalent bond: free radicals, carbocations, carbanions, electrophiles and nucleophiles, types of organic reactions.

(Deleted Chapter in the syllabus of CBSE class 11th Chemistry unit 12 is struck out and highlighted)

Unit XIII: HydrocarbonsThis Unit will take 12 Periods.Classification of Hydrocarbons Aliphatic Hydrocarbons:

• Alkanes – Nomenclature, isomerism, conformation (ethane only), physical properties, chemical reactions including free radical mechanism of halogenation, combustion, and pyrolysis.
• Alkenes – Nomenclature, the 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, the 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 Crafts alkylation and acylation, directive influence of the functional group in monosubstituted benzene.
• Carcinogenicity and toxicity.

(Deleted Chapter in the syllabus of CBSE class 11th Chemistry unit 13 is struck out)

Unit XIV: Environmental ChemistryThis Unit will take 06 Periods.

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

(Entire unit is deleted from NCERT syllabus for Class 12 Chemistry)

Micro-chemical methods are available for several of the practical experiments, wherever possible such techniques should be used.

• Basic Laboratory Techniques
• Cutting glass tube and glass rod
• Bending a glass tube
• Drawing out a glass jet
• Boring a cork
• Characterization and Purification of Chemical Substances
• Determination of melting point of an organic compound.
• Determination of boiling point of an organic compound.
• Crystallization of impure samples of any one of the following: Alum, Copper Sulphate, Benzoic Acid.
• Experiments based on pH
  • Any one of the following experiments:Determination of pH of some solutions obtained from fruit juices, solution of known and varied concentrations of acids, bases, and salts using pH paper or universal indicator.Comparing the pH of solutions of strong and weak acids of the same concentration.Study the pH change in the titration of a strong base using universal indicators.
  • Study the pH change by common-ion in the case of weak acids and weak bases.
• Chemical Equilibrium
  • Study the shift in equilibrium between ferric ions and thiocyanate ions by increasing/decreasing the concentration of either of the ions.
  • Study the shift in equilibrium between [Co(H2O)6] 2+ and chloride ions by changing the concentration of either of the ions.
• Quantitative Estimation
• Using a mechanical balance/electronic balance.
• Alternate fuel – types and importance
• Preparation of standard solution of Oxalic acid.

Determination of strength of a given solution of Sodium hydroxide by titrating it against a standardsolution of Oxalic acid.

• Preparation of standard solution of Sodium carbonate.
• Determination of strength of a given solution of hydrochloric acid by titrating it against

Standard Sodium Carbonate solution.

• Qualitative Analysis
  • Determination of one anion and one cation in a given saltCations- Pb2+, Cu2+, As3+, Al3+, Fe3+, Mn2+, Ni2+, Zn2+, Co2+, Ca2+, Sr2+, Ba2+, Mg2+, NH4
    Anions – (CO3) 2- , S2- , NO2 – , SO3 2- , SO2- 4, NO3 – , Cl- , Br- , I- , PO4 3- , C2O 2- 4, CH3COO- (Note: Insoluble salts excluded)
  • Detection of -Nitrogen, Sulphur, Chlorine in organic compounds.
  • PROJECTS: Scientific investigations involving laboratory testing and collecting information from other sources. A few suggested Projects
• Checking the bacterial contamination in drinking water by testing sulphide ion
• Study of the methods of purification of water
• Testing the hardness, presence of Iron, Fluoride, Chloride, etc., depending upon the
• regional variation in drinking water and study of causes of the presence of these ions above
• permissible limit (if any).
• Investigation of the foaming capacity of different washing soaps and the effect of addition
• of Sodium carbonate on, Study of acidity of fruit and vegetable juices.
• Study the acidity of different samples of tea leaves.
• Determination of the rate of evaporation of different liquids
• Study the effect of acids and bases on the tensile strength of fibers.