CBSE Class 11 Chemistry Syllabus 2020-21| Check Latest Exam Pattern
CBSE has released revised Class 11 Chemistry Syllabus 2020-21. The syllabus has been reduced due to ongoing health crisis. There are several topics which have been removed by the board to ease the pressure of students. The annual examination will be of 70 marks, with a duration of three hours. while experiments, assignments and viva will be of 30 Marks.
Unit
|
Marks
| |
I
| Some Basic Concepts of Chemistry | 11 |
II
| Structure of Atom | |
III
| Classification of Elements and Periodicity in Properties | 04 |
IV
| Chemical Bonding and Molecular Structure | 21 |
V
| States of Matter: Gases and Liquids | |
VI
| Chemical Thermodynamics | |
VII
| Equilibrium | |
VIII
| Redox Reactions | 16 |
IX
| Hydrogen | |
X
| s -Block Element | |
XI
| Some p -Block Element | |
XII
| Organic Chemistry: Some basic Principles and Techniques | 18 |
XIII
| Hydrocarbons | |
Total
| 70 |
Unit I: 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.
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
Unit V: 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 and deviation from ideal behavior.
Unit VI: Chemical Thermodynamics
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, 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.
Unit IX: 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.
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.
Unit XI: 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 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.
Unit XII: 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 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.
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 electrophilicaddition.
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.
Practicals: 30 Marks
| 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 |
Practical Syllabus
Micro‐chemical methods are available for several of the practical experiments, wherever possible such techniques should be used.
A. 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
B. 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 sample of any one of the following: Alum, Copper Sulphate, Benzoic Acid.
C. Quantitative Estimation
i. Using a mechanical balance/electronic balance.
ii. Preparation of standard solution of Oxalic acid.
iii. Determination of strength of a given solution of Sodium hydroxide by titrating it against 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.
D. Qualitative Analysis
a) Determination of one anion and one cation in a given salt
Cations- Pb2+, Cu2+, Al3+, Fe3+, Mn2+, Ni2+, Zn2+ , Co2+, Ca2+, Sr2+ ,Ba2+, Mg2+, [NH 4] +
Anions – [CO3]2-, S2-, [SO3 ]2-, [SO4 ]2-, [NO3 ]-, Cl- ,Br-, I-, [PO4]3-, [C2 O4]2-, CH3 COO-
(Note: Insoluble salts excluded)
(b) Detection of -Nitrogen, Sulphur, Chlorine in organic compounds.
Prescribed Books:
• Chemistry Part -I, Class-XI, Published by NCERT.
• Chemistry Part -II, Class-XI, Published by NCERT
• Laboratory Manual of Chemistry, Class XI Published by NCERT
Download Class 11 Chemistry Syllabus 2020-21
Anions – [CO3]2-, S2-, [SO3 ]2-, [SO4 ]2-, [NO3 ]-, Cl- ,Br-, I-, [PO4]3-, [C2 O4]2-, CH3 COO-
(Note: Insoluble salts excluded)
(b) Detection of -Nitrogen, Sulphur, Chlorine in organic compounds.
Prescribed Books:
• Chemistry Part -I, Class-XI, Published by NCERT.
• Chemistry Part -II, Class-XI, Published by NCERT
• Laboratory Manual of Chemistry, Class XI Published by NCERT
Download Class 11 Chemistry Syllabus 2020-21