CBSE Syllabus For Class 11 Chemistry 2020-21: Class 11 is considered to be a vital stage in secondary education. 11th grade is all about laying foundations for topics to come for Class 12 Board exams as well as competitive entrance tests. Therefore, it’s important that you thoroughly understand Class 11 topics to ease your study. Science students who have opted for Chemistry in Class 11 can feel an exponential rise in its difficulty level.
Therefore, we suggest you take a deep breath, look closely at your CBSE Chemistry Class 11 Syllabus, prepare a study plan and eye your target. It will help you enhance your mindset to absorb what is taught in your classes. Revising the concept every day will surely help you cope with all the problems that you can come your way. In this article, we will take a look into the detailed CBSE Syllabus for Class 11 Chemistry so that you can start your preparations early.
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CBSE Syllabus For Class 11 Chemistry Reduced Upto 30%
Due to the Covid-19 prevailing situation in the country, the officials of CBSE along with the Union HRD Minister have decided to reduce the course load. The officials have reduced CBSE Class 11 Chemistry Syllabus up to 30%. It was also informed that core concepts have not been deleted, only some portions of the chapter have been excluded in Class 11 Chemistry Syllabus.
The CBSE syllabus for Class 11 Chemistry comprises both the theory and practical. The theory exam comprises of 70 marks while the practical exam is held for 30 marks. In this article, we will cover the CBSE Class 11 Chemistry syllabus pertaining to both theory and practical.
CBSE Syllabus For Class 11 Chemistry – Marking Scheme of Theory
As mentioned above, the theory exam in CBSE Class 11 Chemistry carries 70 marks. The total time duration of the exam is three hours. Class 11 Chemistry comprises of 5 units and 14 chapters. Given below are the units and chapters which are included under CBSE Syllabus for Class 11 Chemistry Theory:
| Title | Marks |
| Chapter-1: Some Basic Concepts of Chemistry Chapter-2: Structure of Atom | 11 |
| Chapter-3: Classification of Elements and Periodicity in Properties | 4 |
| Chapter-4: Chemical Bonding and Molecular Structure Chapter-5: States of Matter: Gases and Liquids Chapter-6: Chemical Thermodynamics Chapter-7: Equilibrium | 21 |
| Chapter-8: Redox Reactions Chapter-9: Hydrogen Chapter-10: s-Block Elements Chapter-11: p-Block Elements | 16 |
| Chapter-12: Organic Chemistry – Some Basic Principles and Techniques Chapter-13: Hydrocarbons Chapter-14: Environmental Chemistry | 18 |
| Total | 70 |
Let us now look into the details of CBSE Syllabus for Class 11 Chemistry Theory. In the next sections, we will consider chapterwise syllabus.
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CBSE Syllabus For Class 11 Chemistry Unit 1 – 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. |
CBSE Syllabus For Class 11 Chemistry Unit 2 – Structure of Atom
| 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. |
CBSE Syllabus For Class 11 Chemistry Unit 3 – 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, inert gas radii, Ionization enthalpy, electron gain enthalpy, electronegativity, valency. Nomenclature of elements with atomic number greater than 100. |
CBSE Syllabus For Class 11 Chemistry Unit 4 – 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. |
CBSE Syllabus For Class 11 Chemistry Unit 5 – 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, 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) |
CBSE Syllabus For Class 11 Chemistry Unit 6 – 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 ∆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 non- spontaneous processes, criteria for equilibrium. Third law of thermodynamics (brief introduction). |
CBSE Syllabus For Class 11 Chemistry Unit 7 – 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, hydrolysis of salts (elementary idea), buffer solution, Henderson Equation, solubility product, common ion effect (with illustrative examples). |
CBSE Syllabus For Class 11 Chemistry Unit 8 – Redox Reaction
| 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 |
CBSE Syllabus For Class 11 Chemistry Unit 9 – 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 |
CBSE Syllabus For Class 11 Chemistry Unit 10 – 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. 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. |
CBSE Syllabus For Class 11 Chemistry Unit 11 – 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. |
CBSE Syllabus For Class 11 Chemistry Unit 12 – 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 hyperconjugation. Homolytic and heterolytic fission of a covalent bond: free radicals, carbocations, carbanions, electrophiles and nucleophiles, types of organic reactions. |
CBSE Syllabus For Class 11 Chemistry Unit 13 – 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 (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, directive influence of functional group in monosubstituted benzene. Carcinogenicity and toxicity. |
CBSE Syllabus For Class 11 Chemistry Unit 14 – 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. |
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CBSE Syllabus For Class 11 Chemistry: Practical Experimentations
The CBSE syllabus for Class 11 Chemistry Practical carries 30 marks out of which the time duration is three hours.
Given below is the evaluation scheme of the practical exam:
| Volumetric Analysis | 8 marks |
| Salt Analysis | 8 marks |
| Content-Based Experiment | 6 marks |
| Project Work | 4 marks |
| Class record and viva | 4 marks |
| Total | 30 marks |
CBSE Syllabus For Class 11 Chemistry: Few Estimated Experiments
The given below are a few practical experiments which are considered important for CBSE Syllabus for Class 11 Chemistry students.
A. Basic Laboratory Techniques
- (i) Cutting glass tube and glass rod
- (ii) Bending a glass tube
- (iii) Drawing out a glass jet
- (iv) Boring a cork
B. Characterization and Purification of Chemical Substances
- (i) Determination of the melting point of an organic compound.
- (ii) Determination of boiling point of an organic compound.
- (iii) Crystallization of impure sample of any one of the following: Alum, Copper Sulphate, Benzoic Acid.
C. Experiments Based on pH
- (i) Any one of the following experiments:
- a. 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.
- b. Comparing the pH of solutions of strong and weak acids of the same concentration.
- c. Study the pH change in the titration of a strong base using universal indicator.
- (ii) Study the pH change by common-ion in case of weak acids and weak bases.
D. Chemical Equilibrium
One of the following experiments:
- (i) Study the shift in equilibrium between ferric ions and thiocyanate ions by increasing/decreasing the concentration of either of the ions.
- (ii) Study the shift in equilibrium between [Co(H2O)6]2+and chloride ions by changing the concentration of either of the ions.
E. Quantitative Estimation
- (i) Using a chemical balance.
- (ii) Preparation of standard solution of Oxalic acid.
- (iii) Determination of strength of a given solution of Sodium Hydroxide by titrating it against a standard solution of Oxalic acid.
- (iv) Preparation of standard solution of Sodium Carbonate.
- (v) Determination of strength of a given solution of Hydrochloric acid by titrating it against standard Sodium Carbonate solution.
F. Qualitative Analysis
- (i) Determination of one anion and one cation in a given salt
Cations – Pb2+, Cu2+, Al3+, Fe3+, Mn2+, Ni2+, Zn2+, Co2+, Ca2+, Sr2+,Ba2+, Mg2+, [NH4]+
Anions – [CO3]2-, Cl–, S2-, [PO4]3-, [SO3]2-, [SO4]2-, [NO3]–, Br–, I–, [C2O4]2-, CH3COO–
- (ii) Detection of – Nitrogen, Sulphur, Chlorine in different organic compounds.
CBSE Syllabus For Class 11 Chemistry: Suggested Projects
Let us look at a few scientific projects that can be used for laboratory testing. These are considered under CBSE Syllabus for Class 11 Chemistry:
- (a) Checking the bacterial contamination in drinking water by testing sulphide ion.
- (b) Study of the methods of purification of water.
- (c) 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 the permissible limit (if any).
- (d) Investigation of the foaming capacity of different washing soaps and the effect of the addition of Sodium Carbonate on it.
- (e) Study the acidity of different samples of tea leaves.
- (f) Determination of the rate of evaporation of different liquids.
- (g) Study the effect of acids and bases on the tensile strength of fibres.
- (h) Study of acidity of fruit and vegetable juices.
Note: Any other investigatory project of your choice, which involves about 10 periods of work, can be chosen with the approval of your assigned professor. These projects are important for CBSE Syllabus for Class 11 Chemistry point of view.
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CBSE Syllabus for Class 11 Chemistry: Important FAQs
Given below are the important frequently asked questions:
A: The best books for CBSE Class 11 PCM are your NCERT books. You can download your NCERT books for Class 11 in PDF format at Embibe.
A: You need to create a proper study plan for each of the subjects. Study the concepts which are being taught by your school professor. As you complete each topic, solve the questions given at the end of every chapter. After you have completed all your PCM syllabus, attempt the full mock tests. It will help you revise your concepts for your K-12 examinations.
A: You can solve free Class 11th questions at Embibe.
Now that you know the detailed CBSE syllabus for Class 11 Chemistry, ensure that you have finished every topic, chapter, and concept. Solving CBSE Class 11 Chemistry Questions on Embibe will let you test your understanding of the chapter.
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We hope this detailed article on CBSE Syllabus for Class 11 Chemistry helps you. If you have any query, feel free to ask us in the comment section below. We will surely assist you.
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