Updated and Reduced Chemistry Syllabus for Class 11 CBSE

The Chemistry Subject  Syllabus for CBSE Class XI is reduced by 30%. Students can download the reduced and updated syllabus from here.The CBSE Chemistry Exams may be held in the month of March 2021.The practical exams will also be conducted by CBSE affiliated school for conceptual assessment. The result of CBSE class 11th chemistry exams will depend on students analytical , comprehension and evaluation skills. 

Updated Chemistry Subject for Class XIth :

If you are interested in finding the core structure of any element or substance around you then you should opt for the chemistry subject in class XI. This is one of the compulsory subjects of the Science stream. The new updated  syllabus of CBSE class XI the Chemistry allows students to

  1. Get acquainted with the newly developed areas like industrial chemistry, biomolecules,   synthetic materials, natural resources,
  2. Students also get familiar with units of physical quantities floated by scientific bodies like IUPAC and CGPM and New formulations and nomenclature of elements and compounds, symbols.
  3. Due to the Covid-19 crisis, many new updated topics have been deleted for the 2021 examinations. Students should remember the reduced syllabus is only for the 2021 march exams. 

Chemistry Syllabus Scope:

The refined and progressive  Chemistry syllabus will be covered in NCERT Books. Students can download NCERT books in PDF format  for Class 11th Chemistry Syllabus from here. Students who opted for Chemistry in class 11th will continue with the same subject in class XII also. Students who have an interest in chemistry subject can explore professional opportunities after 12th exams in some of the following popular areas:

  1. Bioscientist
  2. Scientists, 
  3. Medical researcher
  4. Space scientists,
  5. Engineers
  6. Chemical engineers
  7. Atomic Researchers
  8. Adulteration Inspector

CBSE Class XIth Chemistry Reduced Syllabus 2021 

As we know Class XI th and XII syllabus for 2021 exams is reduced to 30%. Students can download the new updated and reduced syllabus from Here. 

VSI  provides CBSE class XIth syllabus of  Accounts, Economics, Maths, Physics,Chemistry, English and all the subjects of arts, commerce and science students.The reduction in course will be  applicable only for annual exams of 2020-2021. We are providing the latest updates and reduced syllabus here for our readers. 

  • Some Basic Concepts of Chemistry
    • General Introduction: Importance and scope of Chemistry.
    • Atomic and molecular masses, mole concept and molar mass, percentage composition, empirical and molecular formula, chemical reactions, stoichiometry and calculations based on stoichiometry.
    • Deleted portion: Nature of matter, laws of chemical combination, Dalton’s atomic theory: concept of elements, atoms and molecules.
  • 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
      Deleted Topics: Discovery of Electron, Proton and Neutron, atomic number, isotopes and isobars. Thomson’s model and its limitations. Rutherford’s model and its limitations
  • 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 numbers greater than 100.
      Deleted topics: Significance of classification, brief history of the development of periodic table,
  • Chemical Bonding and Molecular Structure
    • Valence electrons, ionic bond, covalent bond, bond parameters,
    • 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.
  • 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.
    • Deviation from ideal behaviour
      Deleted Portions: 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)
  • 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,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
    • Third law of thermodynamics (brief introduction).
      Deleted Topics: heat capacity and specific heat, criteria for equilibrium.
  • 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
      buffer solution,
    • solubility product, common ion effect (with illustrative examples).
      Deleted topics: hydrolysis of salts (elementary idea), Henderson Equation,
  • 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,
      Deleted topics:  applications of redox reactions.
  • Hydrogen
    • Position of hydrogen in periodic table,
    • occurrence, isotopes,
    • hydrides-ionic covalent and interstitial; physical and chemical properties of water,
    • heavy water,
    • hydrogen as a fuel
      Deleted Topics: preparation, properties and uses of hydrogen, hydrogen peroxide -preparation,  reactions and structure and use;
  • s -Block Elements
    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.
    Deleted Topics: 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.
  • 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 a first element of the group,
      • Boron – physical and chemical properties,
    • 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.
        Deleted Topics: some important compounds: Borax, Boric acid, Boron Hydrides, Aluminium:
        Reactions with acids and alkalis, uses.  Important compounds of Silicon and a few uses:
        Silicon Tetrachloride, Silicones, Silicates and Zeolites, their uses.
  • Organic Chemistry: Some basic Principles and Techniques
    • General introduction,
    • 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 Topics: methods of purification, qualitative and quantitative analysis,
  • Hydrocarbons Environmental Chemistry
    • Classification of Hydrocarbons Aliphatic Hydrocarbons:
    • Alkanes – Nomenclature, isomerism, conformation (ethane only), physical properties, chemical reactions
    • 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 Crafts alkylation and acylation, directive influence of functional group in monosubstituted benzene.
    • Carcinogenicity and toxicity.
      Deleted Portion: free radical mechanism of halogenation, combustion and pyrolysis.
  • Environmental Chemistry
    This Chapter is deleted for March 2021  Annual exam for class XIth
    Deleted Portion: 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 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.

Reduced SYLLABUS of CBSE class 11th Chemistry for Practicals.

Practical exams for CBSE Class 11th CHEMISTRY is for 40 marks. Students need to cover 

Volumetric Analysis,  Salt Analysis, Content Based Experiment  and complete  Project Work to score for 36 marks . They also have to undergo VIVA for 4 marks

Syllabus for practical Exams for chemistry

  1. Basic Laboratory Techniques
    1. Cutting glass tube and glass rod
    2. Bending a glass tube
    3. Drawing out a glass jet
    4. Boring a cork
  2. Characterization and Purification of Chemical Substances
    1. Determination of melting point of an organic compound.
    2. Determination of boiling point of an organic compound.
    3. Crystallization of impure samples of any one of the following: Alum, Copper Sulphate, Benzoic Acid.
  3. Quantitative Estimation
    1. Using a mechanical balance/electronic balance.
    2. Preparation of standard solution of Oxalic acid.
    3. Determination of strength of a given solution of Sodium hydroxide by titrating it against standard solution of Oxalic acid.
    4. Preparation of standard solution of Sodium carbonate.
    5. Determination of strength of a given solution of hydrochloric acid by titrating it against standard Sodium Carbonate solution.
  4. Qualitative Analysis
    1. Determination of one anion and one cation in a given salt
      Cations- 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)
    2. Detection of -Nitrogen, Sulphur, Chlorine in organic compounds.
    3. PROJECTS: Scientific investigations involving laboratory testing and collecting information from other sources. A few suggested Projects
      1. Checking the bacterial contamination in drinking water by testing sulphide ion
      2. Study of the methods of purification of water
      3. Testing the hardness, presence of Iron, Fluoride, Chloride, etc., depending upon the
        regional variation in drinking water and study of causes of presence of these ions above
      4. permissible limit (if any).
      5. Investigation of the foaming capacity of different washing soaps and the effect of addition
        of Sodium carbonate on it
      6. Study the acidity of different samples of tea leaves.
      7. Determination of the rate of evaporation of different liquids
      8. Study the effect of acids and bases on the tensile strength of fibers.
      9. Study of acidity of fruit and vegetable juices
(Deleted topics:  Experiments based on pH
  1. Anyone 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.
  2. Study the pH change by common-ion in case of weak acids and weak bases.
  3. Chemical Equilibrium
    1. Study the shift in equilibrium between ferric ions and thiocyanate ions by increasing/decreasing the concentration of either of the ions.
    2. Study the shift in equilibrium between [Co(H2O)6] 2+ and chloride ions by changing the concentration of either of the ions.

How to Study for CBSE Class XIth Chemistry Syllabus?

Once Students download their CBSE chemistry syllabus for 2021 from here, they need to highlight the topics that need to be covered for the exams. We are adding few points that can help you to complete the chemistry course in time and also help to score some good marks in the exams.  

  • Make a timetable that can cover the entire update syllabus 
  • Start making notes,and try to cover all the related information like elements properties, chemical formula, reactions, and usage
  • Try to remember all the chemical formulas. The easy way to remember is either through storytelling concepts, or making a chart and reading them daily. 
  • Keep daily targets for study and also allot someday to solve sample papers. 

Take Away of the blog:

This blog serves you with the latest and reduced syllabus for CBSe class XIth  Chemistry subjects. Students should go through the entire chemistry syllabus once and start making notes as suggested above. This will help students to finish the syllabus on time and get some time for thorough revision of the chapters that are coming in the exams. Students should also focus on books recommended by CBSE. According to CBSE  prescribed books to cover  Chemistry subjects are:

Prescribed Books: 

  1. Chemistry Part – I, Class-XI, Published by NCERT.
  2. Chemistry Part – II, Class-XI, Published by NCERT

Students can download the deducted topics and mark them cross in their books pdf. This will help you save time and focus only on what is relevant for March 2021 Chemistry, Physics, Biology, Applied Mathematics papers. 

Students Also Asked:

  • What are deleted topics from the chemistry syllabus from 2021?
    Ans. The deleted topics are mentioned above. The maximum topics are deleted from Unit 5, Unit 10 and Unit 11.
  • From where can I download the syllabus of Class 11 chemistry?
    Ans. VSI coaching institute in India is the best website for all the latest updates on the syllabus, question papers, results of class XI and XII of CBSE board. 
  • How many chapters are deleted in the Cbse Chemistry Class 11th syllabus?
    Ans. Only the environmental chemistry chapter of unit 14 is completely deleted from the course. Only a few topics are deleted from the rest of the chapters. Students can check the deleted topics from above There were 14 chapters in the Chemistry syllabus but for 2021 last chapter Environmental Chemistry is completely deleted.
  • How can I finish the CBSE chemistry Syllabus on time?Join VSI the best coaching institute in India that provides the best faculties, best study materials, and best guidance to understand the complete course and also revise the entire syllabus on time.