Edudel Syllabus 2025 Class 12 Chemistry

CHEMISTRY (043)
ANNUAL SYLLABUS (2024-25)
CLASS-XII

Unit II: Solutions
Types of solutions, expression of concentration of solutions of solids in liquids, solubility of gases in
liquids, solid solutions, Raoult's law, colligative properties - relative lowering of vapour pressure,
elevation of boiling point, depression of freezing point, osmotic pressure, determination of molecular
masses using colligative properties, abnormal molecular mass, van't Hoff factor.

Unit III: Electrochemistry
Redox reactions, EMF of a cell, standard electrode potential, Nernst equation and its application to
chemical cells, Relation between Gibbs energy change and EMF of a cell, conductance in electrolytic
solutions, specific and molar conductivity, variations of conductivity with concentration, Kohlrausch's
Law, electrolysis and law of electrolysis (elementary idea), dry cell-electrolytic cells and Galvanic cells,
lead accumulator, fuel cells, corrosion.

Unit IV: Chemical Kinetics
Rate of a reaction (Average and instantaneous), factors affecting rate of reaction: concentration,
temperature, catalyst; order and molecularity of a reaction, rate law and specific rate constant, integrated
rate equations and half-life (only for zero and first order reactions), concept of collision theory
(elementary idea, no mathematical treatment), activation energy, Arrhenius equation.

Unit VIII: d and f Block Elements
General introduction, electronic configuration, occurrence and characteristics of transition metals,
general trends in properties of the first row transition metals – metallic character, ionization enthalpy,
oxidation states, ionic radii, colour, catalytic property, magnetic properties, interstitial compounds, alloy
formation, preparation and properties of K2Cr2O7 and KMnO4.
Lanthanoids - Electronic configuration, oxidation states, chemical reactivity and lanthanoid contraction
and its consequences.
Actinoids - Electronic configuration, oxidation states and comparison with lanthanoids.

Unit IX: Coordination Compounds
Coordination compounds - Introduction, ligands, coordination number, colour, magnetic properties and
shapes, IUPAC nomenclature of mononuclear coordination compounds. Bonding, Werner's theory,
VBT, and CFT; structure and stereoisomerism, importance of coordination compounds (in qualitative
analysis, extraction of metals and biological system).

Unit X: Haloalkanes and Haloarenes
Haloalkanes: Nomenclature, nature of C–X bond, physical and chemical properties, optical rotation
mechanism of substitution reactions. Haloarenes: Nature of C–X bond, substitution reactions (Directive
influence of halogen in monosubstituted compounds only).
Uses and environmental effects of - dichloromethane, trichloromethane, tetrachloromethane, iodoform,
freons, DDT.

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Unit XI: Alcohols, Phenols and Ethers
Alcohols: Nomenclature, methods of preparation, physical and chemical properties (of primary alcohols
only), identification of primary, secondary and tertiary alcohols, mechanism of dehydration, uses with
special reference to methanol and ethanol.
Phenols: Nomenclature, methods of preparation, physical and chemical properties, acidic nature of
phenol, electrophillic substitution reactions, uses of phenols.
Ethers: Nomenclature, methods of preparation, physical and chemical properties, uses.

NOTE: Completion of syllabus of Mid-Term by September 13, 2024
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MID-TERM EXAMINATION
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Unit XII: Aldehydes, Ketones and Carboxylic Acids
Aldehydes and Ketones: Nomenclature, nature of carbonyl group, methods of preparation, physical and
chemical properties, mechanism of nucleophilic addition, reactivity of alpha hydrogen in aldehydes,
uses.
Carboxylic Acids: Nomenclature, acidic nature, methods of preparation, physical and chemical
properties; uses.

Unit XIII: Amines
Amines: Nomenclature, classification, structure, methods of preparation, physical and chemical
properties, uses, identification of primary, secondary and tertiary amines.
Diazonium salts: Preparation, chemical reactions and importance in synthetic organic chemistry.

Unit XIV: Biomolecules
Carbohydrates - Classification (aldoses and ketoses), monosaccahrides (glucose and fructose), D-L
configuration oligosaccharides (sucrose, lactose, maltose), polysaccharides (starch, cellulose, glycogen);
Importance of carbohydrates.
Proteins -Elementary idea of - amino acids, peptide bond, polypeptides, proteins, structure of proteins -
primary, secondary, tertiary structure and quaternary structures (qualitative idea only), denaturation of
proteins; enzymes.
Hormones - Elementary idea excluding structure.
Vitamins - Classification and functions.
Nucleic Acids: DNA and RNA.

NOTE:
 Complete the annual syllabus by December 13, 2024.
 Whole syllabus will be covered in Common Pre-Board Examination.



 Chapter wise weightage for Pre Board/Annual Examination is as follows:
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Sr. No. Name of the Unit Marks
1. Solutions 7
2. Electrochemistry 9
3. Chemical Kinetics 7
4. The d- and f-block Elements 7
5. Coordination Compounds 7
6. Haloalkanes and Haloarenes 6
7. Alcohols, Phenols and Ethers 6
8. Aldehydes, Ketones and Carboxylic Acids 8
9. Amines 6
10. Biomolecules 7
Total 70

Sr. No. Domain Total Marks Percentage
1. Remembering and Understanding: Exhibit memory of 28 40
previously learned material by recalling facts, terms, basic concepts
and answers. Demonstrate understanding of facts and ideas by
organizing, comparing, translating, interpreting, giving descriptions
and stating main ideas.

2. Applying: Solve problems to new situations by applying acquired 21 30
knowledge, facts, techniques and rules in a different way.

3. Analysing, Evaluating and Creating: Examine and break 21 30
information into parts by identifying motives or causes. Make
inferences and find evidence to support generalizations. Present
and defend opinions by making judgments about information,
validity of ideas or quality of work based on a set of criteria.
Compile information together in a different way by combining
elements in a new pattern or proposing alternative solutions.

PRACTICAL SYLLABUS (2024-25)
Micro-chemical methods are available for several of the practical experiments, wherever possible such techniques
should be used.

A. Surface Chemistry
(a) Preparation of one lyophilic and one lyophobic sol Lyophilic sol - starch, egg albumin and gum
Lyophobic sol - aluminium hydroxide, ferric hydroxide, arsenous sulphide.
(b) Dialysis of sol-prepared in (a) above.
(c) Study of the role of emulsifying agents in stabilizing the emulsion of different oils.

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B. Chemical Kinetics
(a) Effect of concentration and temperature on the rate of reaction between Sodium Thiosulphate and
Hydrochloric acid.
(b) Study of reaction rates of any one of the following:
i) Reaction of Iodide ion with Hydrogen Peroxide at room temperature using different concentration of
Iodide ions.
ii) Reaction between Potassium Iodate, (KIO3) and Sodium Sulphite: (Na2SO3) using starch solution as
indicator (clock reaction).

C. Thermochemistry
Any one of the following experiments
i) Enthalpy of dissolution of Copper Sulphate or Potassium Nitrate.
ii) Enthalpy of neutralization of strong acid (HCI) and strong base (NaOH).
iii) Determination of enthaply change during interaction (Hydrogen bond formation) between Acetone
and Chloroform.

D. Electrochemistry
Variation of cell potential in Zn|Zn2+|| Cu2+|Cu with change in concentration of electrolytes (CuSO4 or
ZnSO4) at room temperature.

E. Chromatography
i) Separation of pigments from extracts of leaves and flowers by paper chromatography and
determination of Rf values.
ii) Separation of constituents present in an inorganic mixture containing two cations only (constituents
having large difference in Rf values to be provided).

F. Preparation of Inorganic Compounds
Preparation of double salt of Ferrous Ammonium Sulphate or Potash Alum.
Preparation of Potassium Ferric Oxalate.

J. Determination of concentration/ molarity of KMnO 4 solution by titrating it against a standard
solution of:
i) Oxalic acid,
ii) Ferrous Ammonium Sulphate
(Students will be required to prepare standard solutions by weighing themselves)

NOTE: Completion of syllabus of Mid-Term by September 13, 2024
____________________________________________________________________________________
MID-TERM EXAMINATION
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G. Preparation of Organic Compounds
Preparation of any one of the following compounds:
i) Acetanilide
ii) Dibenzalacetone
iii) p-Nitroacetanilide
iv) Aniline yellow or 2–Naphthol Aniline dye.

H. Tests for the functional groups present in organic compounds:
Unsaturation, alcoholic, phenolic, aldehydic, ketonic, carboxylic and amino (Primary) groups.

I. Characteristic tests of carbohydrates, fats and proteins in pure samples and their detection in
given foodstuffs.

K. Qualitative Analysis
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 - CO32- , S2- , NO2- , SO32-, SO42-, NO3 -, Cl- , Br-, I-, PO43-, CH3COO-
(Note: Insoluble salts excluded)

PROJECTS
Scientific investigations involving laboratory testing and collecting information from other
sources. A few suggested Projects:
• Study of the presence of oxalate ions in guava fruit at different stages of ripening.
• Study of quantity of casein present in different samples of milk.
• Preparation of soybean milk and its comparison with the natural milk with respect to curd formation,
effect of temperature, etc.
• Study of the effect of Potassium Bisulphate as food preservative under various conditions
(temperature,concentration, time, etc.)
• Study of digestion of starch by salivary amylase and effect of pH and temperature on it.
• Comparative study of the rate of fermentation of following materials: wheat flour, gram flour, potato
juice, carrot juice, etc.
• Extraction of essential oils present in Saunf (aniseed), Ajwain (carum), Illaichi (cardamom).
• Study of common food adulterants in fat, oil, butter, sugar, turmeric power, chilli powder and pepper.
Note: Any other investigatory project, which involves about 10 periods of work, can be chosen with the
approval of the teacher.

Evaluation Scheme for Examination Marks
Volumetric Analysis 08
Salt Analysis 08
Content Based Experiment 06
Project Work 04
Class record and viva 04
Total 30

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