Manipur State Board has published subject wise syllabus for this year Class 11 students in its official portal cohsem.nic.in Here we have published Class 11 COHSEM Syllabus 2024-25 for Chemistry subject. For more information regarding Council of Higher Secondary Education (COHSEM) Class 11 2024 Exam Date, Exam Pattern, Time, Date, How to prepare follow our website.
Board | Council Of Higher Secondary Education (COHSEM) |
Topic | Syllabus |
Subject | Chemistry |
How to download Manipur Class 11 Syllabus 2024-25 – Chemistry?
- Step 1: Open your browser
- Step 2: Type cohsem.nic.in
- Step 3: Go to the Syllabus link active on the left panel of the home page of the website (Syllabus for Classes XI – XII).
- Step 4: Click on Class 11 Syllabus link 2024
Class 11 Chemistry
Chemistry (Theory)
Units | Title | No. of Period | Marks |
I | Some basic concepts of Chemistry | 18 | 28 |
II | Structure of atom | 18 | |
III | Classification of elements and periodicity in properties | 12 | |
IV | Chemical bonding and molecular structure | 18 | |
V | Thermodynamics | 20 | 24 |
VI | Equilibrium | 22 | |
VII | Redox reactions | 12 | |
VIII | Organic Chemistry : Some basic Principles and Techniques | 20 | 18 |
XIII | Hydrocarbons | 20 | |
Total | 160 | 70 |
Note: A minimum of 4 marks must be allotted to each unit.
Unit I: Some basic Concepts of Chemistry
Importance of Chemistry, Nature of Matter, properties of matter and their measurement, uncertainty in measurement, laws of Chemical combination, Dalton’s Atomic Theory, Atomic and Molecular Masses, Mole concept and Molar Masses, percentage composition, Empirical and Molecular formula, Stoichiometry and Stoichiometric calculations.
Unit II: Structure of Atom
Discovery of electron, proton and neutron; atomic number, isotopes and isobars. Thompson’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 uncertaintuy principle, concept of orbitals, quantum numbers, shapes of s- , p and d orbitals, rules for filling electrons in orbitals – Aufbau principle, Pauli 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.
Why do we need to classify elements? Genesis of periodic classification, Modern Periodic Law and the present form of the perioidic Table, nomenclature of elements with Atomic Number>100, Electronic configurations of elements and the periodic table, Electronic configuration and types of elements , s-, p-d-f- Blocks, Periodic Trends in Properties of Elements – atomic radii , ionic radii, A ionization enthalpy electron gain enthalpy, electronetivity, periodic trends in chemical properties.
Unit IV: Chemical Bonding and Molecular Structure.
Kossel – Lewis Approach to Chemical Bonding, Ionic or Electrovalent Bond, Covalent bond, Bond parameters, Polarity of bonds, The Valence shell Electron Pair Repulsion (VSEPR) Theory, Valence Bond Theory, Hybridisation, Molecular Orbital Theory, Bonding in some Homonuclear Diatomic molecules, hydrogen Bonding.
Unit V: Thermodynamics
Thermodynamic Terms, Applications, First law of thermodynamics, Heat capacity, Relationship between Cp and Cv, Measurement of △U and △H, Calorimetry, Enthalpy change, △rH of a Reaction-Reaction Enthalpy, Enthalpies for different types of reactions, Entropy, Spontaneity, Gibbs energy change and equilibrium, Third law of thermodynamics (brief introduction).
Unit –VI: Equilibrium
Equilibrium in physical processes, equilibrium in chemical processes – Dynamic Equilibrium, Law of Chemical Equilibrium and Equilibrium constant, Homogenous Equilibria, Heterogeneous Equilibria, Application of Equilibrium constants, Relationship between Equilibrium constant K, Reaction Quotient Q and Gibbs Energy G, Factors Affecting Equilibria Ionic Equilibrium in solution, Acids, Bases and salts, Ionization of Acids and Bases, Hydrolysis of salts and pH of their solutions, buffer solutioins, Handerson – Hasselbalch equation, solubility Equilibria of sparingly soluble salts common ion effect.
Unit – VII: Redox Reactions
Classical idea of Redox reactions – Oxidation and Reduction Reactions, Redox Reactions in terms of Electron Transfer, Oxidation Number, Balancing redox reactions, Redox Reactions and Electrode Processes.
Unit – VIII: Organic Chemistry – some basic principles and Techniques.
General Introduction, Tetra valance of carbon: shapes of organic compounds, structural representations of organic compounds, classification of organic compounds, Nomenclature of organic compounds, Isomerism, Fundamental concepts in organic Reaction Mechanism, Methods of purification of organic compounds, Qualitative Analysis of organic compounds, Quantitative Analysis.
Unit –IX: Hydrocarbons
General introduction, classification of Hydrocarbons.
Alkanes – Nomenclature, isomerism, conformations (ethane only), Preparations, Physical properties, chemical reactions including free radical mechanism of halogenations, 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; Benzne,: resonance, aromaticity; chemical properties: mechanism of electrophilic substitution – nitration sulphonation, halogenations, Friedel Craft’s alkylation and acylation; directive influence of functional group in mono-substituted benzene; carcinogenicity and toxicity.
Chemistry (Practicals)
Evaluation Scheme for Examination | Marks | |
A | Volumetric Analysis | 10 |
B | Salt Analysis | 8 |
C | Content Based Experiment | 6 |
D | Class Record and Viva | 6 |
Total | 30 |
(A) Quantitative estimation
- Using a chemical balance.
- Preparation of standard solution of oxalic acid.
- Determination of strenght of a given solution of sodium hydroxide by titrating it against standard solution of oxalic acid.
- Preparation of standard solution of sodium carbonate.
- Determination of strength of a given solution of hydrochloric acid by titrating it against standard sodium carbonate solution.
(B) Qualitative analysis
Determination of one anion and one cation in a given salt
(Note: Insoluble salts excluded)
(C) Content based experiment
(i) 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
(ii) Characterization and Purification of Chemical Substances:
(1) Determination of melting point of an organic compound
(2) Determination of boiling point of organic compound
(3) Crystallization involving impure sample of any one of the following: Alum, Copper sulphate, Benzoic acid
(iii) Experiments related to pH change
(a) Any one of the following experiments:
- Determination of pH of some solutions obtained from fruit juices, varied concentrations of acids, bases and salts using pH paper or universal indicator.
- Comparing the pH of solutions of strong and weak acids of same concentration.
- Study of the pH change in titration of a strong base using universal indicator.
(b) Study of pH change by common-ion effect in case of weak acids and weak bases.
(iv) Chemical equilibrium
One of the following experiments:
(a) Study the shift in equilibrium between ferric ions and thiocyanate ions by increasing/decreasing the concentration of either ions.
(b) Study of the shift in equilibrium between [Co(H2O)6]2+ and chloride ion by changing the concentration of either of the ions.
(v) Detection of nitrogen, sulphur, chlorine
(D) Class record and viva voce.
Design of Question Paper
Here on this page we have uploaded Chemistry subject syllabus 2024. You can download the complete syllabus from the link mentioned below: