PSEB 12th Class Syllabus 2027 Chemistry

FOR PUNJAB CLASS 12 PREPARATION

PSEB 12th Class
Syllabus 2027
Chemistry
EXAM YEAR TYPE SUBJECT

Punjab Class 12 2027 Syllabus Chemistry

Notes · Sample Papers · Previous Year Papers · Mock Tests

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CLASS-XII
CHEMISTRY
Time: 3 Hrs Theory:
70 Marks
Practical: 25 Marks

INA : 5 Marks
Total: 100 Marks

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SYALLBUS (THEORY)

omTypes of solutions, expression of concentration of .
Unit I: Solutions

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lsolid solutions, colligative properties - relative lowering of a
solutions of solids in liquids, solubility of gases in liquids,
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a vapour pressure, Raoults Law, elevation of B.P., depression of
freezing point, osmotic pressure, determination of molecular
masses using colligative properties, abnormal molecular
mass. Vant Hoff factor.
Unit II: Electrochemistry

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solutions, specific and molar. conductivity, variations of
Redox reactions; conductance in electrolytic

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g electrolysis (elementary idea) dry cell-
conductivity with concentration, Kohlrausch's Law,
electrolysis and laws aof
electrolytic cells and Galvanic cells; lead accumulator, EMF of
a cell, standard electrode potential, Nernst equation and its
application to chemical cells, fuel cells; corrosion. Relation
between Gibbs Energy change and EMF of cell.

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Unit III: Chemical Kinetics

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Rate of a reaction (average and instantaneous),
factors affecting rates 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, Arrhenious equation.
Unit-IV: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,
electronic configuration, oxidation
states,
chemical reactivity and lanthanoid contraction and consequences.
Actenoids - Electronic configuration, oxidation states.
Unit-V: Coordination Compounds
Coordination compounds - introduction, ligands,
coordination number, colour, magnetic properties and
shapes, IUPAC nomenclature of mononuclear coordination
compounds, bonding; Werner’s theory VBT, CFT, Isomerism
(structure and stereo) importance of coordination compounds
(in qualitative analysis, extraction of metals and biological
systems).
Unit-VI: Haloalkanes and Haloarenes.
Haloalkanes: Nomenclature, nature of C-X bond,
physical and chemical properties, mechanism of substitution
reactions, optical rotation.
Halearenes: Nature of C-X bond, substitution
reactions (directive influence of halogen for monosubstituted
compounds only)
Uses and environmental effects of - dichloromethane, t

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as Unit –VII:
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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 -

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methanol and ethanol.

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Phenols: Nomenclature, methods of preparation,
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la Ethers: Nomenclature, methods of preparation, a g
electrophilic

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Unit-VIII: Aldehydes, Ketones aml Carboxylic Acids
Aldehydes and Ketones: Nomenclature, nature

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of carbonyl group, methods of preparation, physical and

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chemical properties, and mechanism of nucleophilic addition,

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lAcids: Nomenclature, acidic nature,
reactivity of alpha hydrogen in aldehydes; uses.

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Carboxylicg
methods of preparation, physical and chemical properties;
uses.
Unit-IX: Organic compounds containing Nitrogen Amines:
Nomenclature, classification, structure,

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methods of preparation, physical and chemical properties,

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uses, identification of primary, secondary and tertiary

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amines.

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Cyanides and Isocyanides - will be mentioned

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Dizonium Salts: Preparation, chemical reactions
and importance in synthetic organic chemistry.
Unit-X: Biomolecules
Carbohydrates - Classification (aldoses and
ketoses), monosaccaharides (glucose and fructose),

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oligosaccharides (sucrose, lactose, maltose), polysaccharides

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(starch, cellulose,

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Proteins - Elementary idea of amino acids,
peptide bond, polypeptides proteins, primary structure,
secondary structure, tertiary structure and quaternary
structure (qualitative idea only), denaturation of proteins;
enzymes.
Vitamins: Classification and
functions. Harmones:
Elementary idea (excluding
structure) Nucleic Acids: DNA
& RNA .
STRUCTURE OF QUESTION PAPER (PRACTICAL)
Marks: 25
Evaluation Scheme for Examination Marks
Volumetric Analysis 07
Salt Analysis 07
Content Based Experiment 05
Project Work 03
Class record and viva 03
Total 25
PRACTICAL SYLLABUS

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A. 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

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peroxide at room temperature using different

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ii. Reaction between potassium iodate, KIO3,

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and sodium sulphite: (Na2 SO3) using
starch solution as indicator (clock
reaction).
B. Electrochemistry: Variation of cell potential in
Zn/Zn+2IICu+2/Cu with change in concentration of
electrolytes (CuSO4 or ZnSO4 at room temperature.

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C. Determination of concentration/morality of KMnO4,
solution by
titrating it against a standard Solution of:
a. Oxalic acid.
b. Ferrous ammonium sulphate.
(Students will be required to prepare standard
solutions by weighing themselves).
D. Preparation of Inorganic Compounds
a. Preparation of double salt of ferrous ammonium
sulphate or potash alum.
b. Preparation of potassium ferric oxalate.
E. Preparation of Organic Compounds: Preparation of
any two of the following compounds
a. Acetanilide
b. Di-benzal acetone
c. p-Nitroacetanilide,
d. Aniline yellow òr 2-Napthol aniline dye.
e. Lodoform
F. Test for the functional groups present in organic
compounds: Unsaturation, alcoholic, pheholic,
aldehydic, ketonic, carboxylic and amino (primary)
groups.

G. Study of carbohydrates, fats and proteins in pure
form and detection of their presence in given
food stuffs.
H. Qualitative analysis: Determination of one catiop
and one anion in a given salt.
Cations- Pb2+, Cu2+, As3+, Al3+, Fe3+, Mn2+, Zn2+,
Co2+, Ni2+, Ca2+, Sr2+, Ba2+, Mg2+, NH4+
2- 2- 2- - 2- - - - 3- 2-
Anions- : (CO3) , S , (SO3) , (NO2) , (SO4) , Cℓ , Br , I , PO , (C2O4) ,
CH3COO- ,NO -

(Note: Insoluble salts excluded)
PROJECT
Scientific investigations involving laboratory

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as Testing and collecting information from other sources.
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A few suggested Projects
1. Study of presence of oxalate ions in guava fruit at
different stages of ripening.
2. Study of quantity of casein present in different samples of milk.

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3. Preparation of soyabean milk and its comparison with

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the natural milk with respect to curd formation, effect

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emStudy of the effect of potassium bisulphate as food
of temperature etc.

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la preservative under various conditions (temperature,
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a concentration, time etc,)
5. Study of digestion of starch by salivary amylase and
effect of PH and temperature on it.
6. Comparative study of the rate of fermentation of
following material wheat flour. gram flour, Potato juice,

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carrot juice etc.

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7. Extraction of essential oils present in saunf (aniseed),

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lfood adulterants in fat, oil, butter,
Ajwain (carum) illaichi (cardamom).
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Study of commong
sugar, turmeric powder, chilli powder and pepper.
Note: Any investigatory project, which involves about 10 periods of
work, can be chosen with the approval of the teacher.

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