Class 11th Chemistry

Chemistry is the study of matter and its properties. How and why various substances combine or separate with each other and their reactions with other substances. Understanding the basics of chemistry is very important for students no matter which field they choose in their lives. Every substance is made of matter even our own bodies. Everything we do from cooking to cleaning, chemistry is involved everywhere. Chemistry is one of the most important subject of class 11th Science. As it forms the base for class 12th Boards and for higher education students should focus and get their concepts crystal clear to achieve their goals.

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CBSE Paper Structure

Chapter 1: Some Basic Concepts of Chemistry

  • Introduction
  • Laws of chemical combination
  • Numericals
  • Daltons atomic Theory
  • Percentage composition
  • Empirical formula
  • Molecular formula
  • Mole concept
  • Numericals on mole concept
  • Mole-weight
  • Mole-particle
  • Mole-volume relationship
  • Expressing concentrations % by mass
  • Expressing concentrations % by weight/v
  • Mole fraction
  • Molarity
  • Molality
  • Numericals
  • Dilution problem
  • Mixing problem

Chapter 2: Structure of Atom

  • Introduction Cathode rays
  • Anode rays
  • Thomson’s model and its limitations
  • Rutherford’s model and its drawbacks
  • Bohr’s Model plus derivation of radius of shell of H-atom
  • Energy of shell of H-atom plus numerical.
  • Dual nature of matter and light
  • Photo electric effect
  • de Broglie’s relationship
  • Numerical
  • Heisenberg uncertainity principle
  • Concept of orbitals
  • Quantum number
  • Rules for filling electron
  • Aufbau rule
  • Hund’s rule
  • Pauli’s exclusion principle
  • Electronic configuration of atoms
  • Stability of half filled
  • Completely filled orbitals

Chapter 3: Classification of Elements & Periodicity in Properties

  • Significance of classification
  • Brief history of the development of periodic table
  • Modern periodic law
  • Present form of periodic table
  • Periodic trends in properties of elements – atomic radii
  • Periodic trends in properties of elements – ionic radii
  • Periodic trends in properties of elements – Ionization enthalpy
  • Electron gain enthalpy
  • Electronegativity
  • Valency
  • Exercise questions

Chapter 4: Chemical Bonding and Molecular Structure

  • Valence electrons
  • Ionic bond
  • Factors influening ionic bond
  • Solubility of ionic salts
  • Covalent character in ionic bond
  • Fazan’s rule
  • Lewis concept of covalent bond
  • Simple overlap theory
  • VSEPR introduction
  • Concept of Hybridization
  • Example BeCl2, BF3, CH4, PCl5, SF4
  • Other examples on hybridization H2O, NH3etc.C2H4, C2H2 + VSEPR
  • Dipole moment in bonds and molecules
  • Polarity
  • Molecular forces of attraction
  • Molecular forces attraction continued.
  • Molecular orbital theory

Chapter 5: States of Matter: Gases & Lquids

  • Three states of matter
  • Application of intermolecular forces of attraction
  • Boyle’s law
  • Charles law
  • Gay Lussac’s law
  • Avogadro’s law
  • Numericals
  • Numericals continued
  • Combined gas law
  • Ideal gas equations
  • Kinetic theory of gas
  • Ideal behaviour
  • Non ideal behaviour
  • Vander waals equation
  • Liquids and its properties

Chapter 6: Thermodynamics

  • System and types of system
  • Surrounding
  • State function
  • Work
  • Heat
  • Energy
  • Extensive and intensive properties
  • First law of thermodynamics
  • Internal energy and enthalpy
  • Relation between DH and DU
  • Heat capacity
  • Specific heat
  • Measurement of U and H change
  • Hess’s law of constant heat summation
  • Enthalpies of bond
  • Dissociation
  • Combustion
  • Atomization
  • Sublimation
  • Phase transformation
  • Ionization
  • Solution
  • Numericals on previous topics
  • Introduction of entropy as a state function
  • Entropy free energy change for spontaneous
  • Non – spontaneous process criteria for equilibrium

Chapter 7: Equilibrium

  • Equilibrium in physical and chemical processes
  • Dynamic nature of equilibrium
  • Law of mass action
  • Equilibrium expressions
  • Relation between KP& KC
  • Factors affecting equilibrium
  • Le Chatelier’s principle
  • Ionic equilibrium
  • Ionization of acids and bases
  • Strong and weak electrolytes
  • Degree of ionization
  • Common ion effect
  • Concept of pH
  • Numericals
  • Buffer solution
  • Solubility product
  • Ionic product

Chapter 8: Redox Reactions

  • Concept of oxidation and reduction
  • Redox reactions
  • Oxidation number
  • Balancing redox reactions
  • Application of redox reactions
  • Electrochemical Series

Chapter 9: Hydrogen

  • Position of hydrogen in periodic table
  • Occurrence
  • Isotopes
  • Preparation
  • Properties
  • Uses of hydrogen
  • Physical and chemical properties of water
  • Hydrogen peroxide – preparation & structure

Chapter 10: s-Block Elements

  • General introduction
  • Electronic configuration
  • Anomalous properties of the first element of each group
  • Physical properties
  • Trends in chemical reactivity with oxygen, water, halogens
  • Preparation of Sodium chloride
  • Sodium hydroxide
  • Calcium oxide
  • Calcium carbonate
  • Uses of lime and limestone
  • Biological importance of Magnesium and Calcium

Chapter 11: Some 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 & Aluminium – physical and chemical properties
  • Some important compounds
  • Group 14 Elements: General introduction
  • Electronic configuration
  • Occurrence
  • Variation of properties
  • Oxidation states
  • Trends in chemical reactivity
  • Anomalous behaviour of first elements of the group

Chapter 12: Organic Chemistry: Basic Priniples

  • General introduction
  • IUPAC nomenclature of organic compounds 1st part
  • IUPAC nomenclature 2nd part
  • Electronic displacements in a covalent bond
  • Homolytic and heterolytic fission of a covalent bond
  • Carbocations
  • Carbo anions
  • Free radicals
  • Methods of qualitative and quantitative analysis
  • Resonance
  • Hyperconjugation
  • Electromeric effects

Chapter 13: Hydrocarbons

  • Alkanes
  • Nomenclature
  • Isomerism
  • Conformation
  • Chemical properties of alkanes like free radical mechanism of halogenation
  • Combustion etc
  • Alkenes
  • Nomenclature
  • Structure of double bond
  • Geometrical isomerism
  • Physical properties of Alkenes
  • Alkenes
  • Chemical properties
  • Alkynes
  • Physical properties
  • Methods of preparation
  • Alkynes
  • Chemical properties
  • Preparation of benzene and properties
  • Nitration
  • Sulphonation
  • Halogenation
  • Friedel Craft’s reaction

Chapter 14: Environmental Chemistry

  • Environmental pollution – air, water and soil pollution
  • Chemical reactions in atmosphere
  • Smog
  • Major atmospheric pollutions
  • Acid rain
  • Ozone and its reactions
  • Depletion of ozone layer and its effect
  • Greenhouse effect
  • Global warming

Sample Papers

Class 11 CBSE Sample Papers have been made as per the latest curriculum and syllabus recommended by NCERT and the CBSE board. This will help students excel in the upcoming exams.
Working on these papers will not only help students with time management but will also aid in analysing their areas of improvement. It will give them an idea of their readiness level for the final exams.
Features of CBSE Sample Papers

  • The papers adhere to the CBSE syllabus and its marking scheme
  • Sample papers use an intuitive pattern to prepare students for questions likely to appear in exams
  • They will help students learn effective time management techniques, so that they get better at time allotment to different questions and can complete entire paper in time
  • Sample papers also have a model solution provided by team of our expert faculty as per CBSE guidelines

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