CBSE 11th Chemistry Syllabus

• Unit I: Some Basic Concepts of Chemistry
  General Introduction: Importance and scope of chemistry.
  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 Atom
  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.
• Unit III: Classification of Elements and Periodicity in Properties
  Modern periodic law and the present form of 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 number greater
  than 100
• Unit IV: Chemical Bonding and Molecular structure
  Valence electrons, ionic bond, covalent bond, bond parameters, 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(qualitative idea only), hydrogen bond.
• Unit V: States of Matter: Gases, Liquids and Solids
  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. Deviation 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)
  Solid state: Classification of solids based on different binding forces: molecular, ionic,
  covalent and metallic solids, amorphous and crystalline solids (elementary idea). Unit cell in
  two dimensional and three dimensional lattices, calculation of density of unit cell, packing in
  solids, packing efficiency, voids, number of atoms per unit cell in a cubic unit cell, point
  defects, electrical and magnetic properties.







• Unit VI: Chemical Thermodynamics
  Concepts of System and types of systems, surroundings, work, heat, energy, extensive and
  intensive properties, state functions. First law of thermodynamics -internal energy and
  enthalpy, heat capacity and specific heat, measurement of AU and AH, 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 non- spontaneous processes, criteria for equilibrium.
  Third law of thermodynamics (brief introduction).
• 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, ionization of poly basic acids, acid strength, concept of pH, Henderson Equation,
  hydrolysis of salts (elementary idea), buffer solution, solubility product, common ion effect
  (with illustrative examples).
• Unit VIII: Redox Reactions
  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.
• 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, reactions and 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 Chloride, Sodium
  Hydroxide and Sodium Hydrogencarbonate, Biological importance of Sodium and Potassium.
  Calcium Oxide and Calcium Carbonate and their industrial uses, biological importance of
  Magnesium and Calcium
• Unit XI: 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 alkalies, uses.
  Group 14 Elements: General introduction, electronic configuration, occurrence, variation of
  properties, oxidation states, trends in chemical reactivity, anomalous behaviour 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.
  Group -15 Elements: General introduction, electronic configuration, occurrence, oxidation
  states, trends in physical and chemical properties; Nitrogen preparation properties and uses;
  compounds of Nitrogen, preparation and properties of Ammonia and Nitric Acid, Oxides of
  Nitrogen(Structure only) ; Phosphorus – allotropic forms, compounds of Phosphorus:
  Preparation and Properties of Phosphine, Halides and Oxoacids (elementary idea only).
• Unit XII: Organic Chemistry – Some Basic Principles and Techniques
  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 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
  Aliphatic Hydrocarbons:
  Alkanes – Nomenclature, isomerism, conformation (ethane only), physical properties,
  chemical reactions including free radical mechanism of halogenation, 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 (Markownikov’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, directive influence of
  functional group in monosubstituted benzene. 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, strategies for control of
  environmental pollution.

Source and Credits: Syllabus is taken from CBSE website. LearnFatafat is not responsible for any changes in the syllabus. Students are requested to refer cbse.nic.in in case of any changes.

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