In this post you can find updated WBCHSE Class 12 Chemistry Syllabus PDF Download for the recent academic year. WBCHSE Class 12 Chemistry Syllabus comprises of all three disciplines that is physical chemistry, inorganic chemistry and organic chemistry.
The major topics studied include – solid states, solutions, electrochemistry, chemical kinetics, surface chemistry, General principles and processes of isolation of elements, p-block, d-block, f-block elements, coordination compounds, haloalkanes and haloarenes, alcohol, phenol and ethers, aldehydes, ketones and carboxylic acids, organic compounds containing nitrogen, biomolecules, polymers, chemistry in everyday life.
West Bengal state board Class 12 Chemistry Syllabus is prescribed by the West Bengal Council of Higher Secondary Education, popularly known as WBCHSE. The board was established and attained autonomous status in the year 1975 and endeavors for promoting and developing standard affordable higher secondary education in the state territory of West Bengal. West Bengal Council of Higher Secondary Education (WBCHSE) Responsible For Conducting Standard 12 Examination (or Higher Secondary level or Pre-university level Examination) Annual Examination Starting February 26th 2021, End of Exam March 13, 2021.
🔥🔥🔥 Latest Update
- May 17: West Bengal Board 12th Class Public Exam would begin on Month of June 15th to 2nd July 2021 for Bengali, English Medium Wise, We have Update the Details of the 12th Class Final Exam Schedule for the 2021 on our website. The Exam will be held with Strict Adherence to COVID Protocols”, an Official of the WBCHSE said to PTI [Need Citation]
- May 21: The duration of WBCHSE 12th exams 2021 to be reduced to 1.5 hours. The examinations will be held over a period of 8 days beginning last week of July. Students will appear only in main subjects. Other subjects will be marked on basis of school marks. [Ref 4]
- May 28: WBCHSE changes Class 12 Board Exam timings; to conduct exam at home centre.
- May 27: West Bengal Council of Higher Secondary Education (WBCHSE) has announced 12th Class Final Exam Schedule Month of July 23th to August 03rd 2021 and the Examination will be held in only one paper on each day and exam duration 1.5 hours for 12th Class. Download Official Notification regarding 🔽 [Ref 3] and [Ref 5]
Unitwise Marks Distribution of WBCHSE Class 12 Chemistry Syllabus
|Unit Name||Academic Year|
|General Principles and Processes of Isolation of Elements||03||–|
|d-and f- Block Elements*||05||01|
|Haloalkanes and Haloarenes*||04||04|
|Alcohols, Phenols and Ethers*||04||04|
|Aldehydes, Ketones and Carboxylic acids||06||10|
|Organic Compounds containing Nitrogen*||04||04|
|Chemistry In Everyday Life||03||–|
The complete latest syllabus of WBCHSE of Class 12 Chemistry is mentioned below along with the subtopics. [Ref: 1]
Subject wise Question Pattern for WBCHSE Class 12 HS Examination 2021
WBCHSE Chemistry Class 12 Chemistry Question Pattern For H.S Examination 2021 and 2022 is given bellow.
WBCHSE of Class 12 Chemistry Syllabus
Unit – I: Solid State
From the above unit, the topics Electrical and magnetic properties. Band theory of metals, conductors, semiconductors and insulators and n and p type semiconductors have been discarded from 2020-21 syllabus.
Classification of solids based on different binding forces: molecular, ionic, covalent and metallic solid, amorphous and crystalline solids (elementary idea), unit cell in two dimensional and three dimensional lattices, packing efficiency, calculation of density of unit cell, packing in solids, voids, number of atoms per unit cell in a cubic unit cell, point defects,
electrical and magnetic properties. Band theory of metals, conductors, semiconductors and insulators and n & p-type semiconductors.
Unit – II: Solutions
From the above unit, the topics Abnormal molecular mass, Van’t Hoff factor and calculations involving it have been discarded from 2020-21 syllabus.
Types of solutions, expression of concentration of solution of solids in liquids, solubility of gases in liquids, solid solutions, colligative properties – relative lowering of vapour pressure, Raoult’s law, elevation of boiling point, depression of freezing point, osmotic pressure, determination of molecular masses using colligative properties,
abnormal molecular mass, van’t Hoff factor and calculations involving it.
Unit – III: Electrochemistry
From the above unit, the topics lead accumulator have been discarded from 2020-21 syllabus.
Red ox reactions, conductance in electrolytic solutions, specific and molar conductivity, variations of conductivity with concentration, Kohlrausch’s law, electrolysis and laws of electrolysis (elementary idea), dry cell – electrolytic cells and Galvanic cells;
lead accumulator, EMF of a cell, standard electrode potential, Nernst equation and its application to chemical cells. Reaction between Gibbs energy change and emf of a cell, fuel cells: corrosion.
Unit – IV: Chemical Kinetics
From the above unit, the topics Concept of collision theory, activation energy, Arrhenius equation have been discarded from 2020-21 syllabus.
Rate of a reaction (average and instantaneous), factors affecting rates of reactions; 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 – V: Surface Chemistry
From the above unit, the topics Emulsion – types of emulsions, catalysis: homogenous and heterogeneous, activity and selectivity; enzyme catalysis and emulsion – types of emulsions have been discarded from 2020-21 syllabus.
Adsorption – physisorption and chemisorption; factors affecting adsorption of gases on solids;
catalysis; homogenous and heterogeneous, activity and selectivity; enzyme catalysis; colloidal state, distinction between true solutions, colloids and suspensions; lyophillic, lyophobic, multimolecular colloids; properties of collioids; tyndall effect, Brownian movement, electro phoresis, coagulation; emulsion – types of emulsions. Elementary idea of nanomaterials.
Unit – VI: General Principles and Processes of Isolation of Elements (This entire chapter has been discarded from 2020-21 syllabus)
Principles and methods of extraction – concentration, oxidation, reduction electrolysis method and refining; occurrence and principles of extraction of aluminium, copper, zinc and iron.
Unit – VII: p- Block Elements
From the above unit, the topics Preparation and properties of Phosphine, industrial process of manufacture of Sulphuric acid, Oxides of Nitrogen; Phosphorus – allotropic forms, compounds of Phosphorus: Preparation and properties of Halides and Oxo acids (elementary idea only) have been discarded from 2020-21 syllabus.
Group 15 elements: general introduction, electronic configuration, occurrence, oxidation states, trends in physical and chemical properties; nitrogen – preparation, properties and uses; compounds of nitrogen; preparation and properties of ammonia and nitric acid,
oxides of nitrogen (structure only); Phosphorus – allotropic forms; compounds of phosphorus; preparation and properties of phosphine, halides (PCL3, PCL5) and oxoacids (elementary idea only).
Group 16 elements: General introduction, electronic configuration, oxidation states, occurrence, trends in physical and chemical properties; dioxygen; preparation, properties and uses; classification of oxides; ozone, sulphur – allotropic forms; Compounds of sulphur dioxide; sulphuric acid:
industrial process of manufacture of sulphuric acid , properties and uses, other oxides and oxoacids of sulphur (structures only).
Group 17 elements: General introduction, electronic configuration, oxidation states, occurrence, trends in physical and chemical properties; compounds of halogens; preparation, properties and uses of chlorine and hydrochloric acid, interhalogen compounds, oxoacids of halogens (structure only).
Group 18 elements: General introduction, electronic configuration. Occurrence, trends in physical and chemical properties uses.
Unit – VIII: d and f Block Elements
From the above unit, the topics Chemical reactivity of lanthanoids and Actinoids: Electronic configuration, oxidation states and comparison with lanthanoids. Preparation and properties of K2Cr2O7 and KMnO4 have been discarded from 2020-21 syllabus.
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
From the above unit, the topics Structural and stereoisomerism, importance of coordinatlon compounds (in qualitative analysis, extraction of metals and biological system) have been discarded from 2020-21 syllabus.
Coordination compounds – Introduction, Ligands, coordination number, colour, magnetic properties and shape, IUPAC nomenclature of mononuclear coordination compounds. Bonding (Werner’s theory, VBT and CFT);
structural and stereo isomerism, importance of coordination compounds (in qualitative inclusion of analysis, extraction of metals and biological systems)
Unit – X: Haloalkanes and Haloarenes
From the above unit, the topics Uses and Environmental effects of -dichloromethane, trichloromethane, tetrachloromethane, iodoform, freons, DDT have been discarded from 2020-21 syllabus.
Nomenclature, nature of C-X bond, physical and chemical properties, mechanism of substitution reactions. Stability of carbonations, R-S and d-I configurations
Nature of C-X bond, substitutions reactions (directive influence of halogen for monosubstituted compound only, stability of carbocations R-S and d-I configurations)
Uses and Environmental effects of – dichloromethane, trichloromethane, tetrachloromethane, iododorm, freons, DDT.
Unit – XI: Alcohols, phenols and Ethers
From the above unit, the topics uses with special reference to methanol and ethanol have been discarded from 2020-21 syllabus.
Alcohols: Nomenclature, methods of preparation, physical and chemical properties (of primary alcohols only); identification of primary, secondary and tertiary alcohols; mechanism of dehydration,
uses of methanol and ethanol.
Phenols: Nomenclature, methods of preparation, physical and chemical properties, acidic nature of phenol, electrophillic substitution reactions, uses of phenol.
Ethers: Nomenclature, methods of preparation, physical and chemical properties, uses.
Unit – XII: Aldehydes, Ketones and Carboxylic Acids
Aldehydes and Ketones: Nomenclature, nature of carbonyl group, methods of preparation, physical and chemical properties, mechanism of nucleophillic addition, reactivity of alpha hydrogen in aldehydes; uses.
Carboxylic Acids: Nomenclature, acidic nature, methods of preparation, physical and chemical properties, uses.
Unit – XIII: Organic compounds containing Nitrogen
From the above unit, the topics Diazonium salts: Preparation, chemical reactions and importance in synthetic organic chemistry have been discarded from 2020-21 syllabus.
Nitro compounds: General methods of preparation and chemical reactions.
Amines: Nomenclature, classification, structure, methods of preparation, physical and chemical properties, uses, identification of primary, secondary and tertiary amines.
Cyanides and Isocyanides – will be mentioned at relevant places in context.
Diazonium salts: Preparation, chemical reactions and importance in synthetic organic chemistry.
Unit – XIV: Biomolecules
From the above unit, the topics Oligosaccharides (sucrose, lactose, maltose), polysaccharides (starch, cellulose, glycogen), importance of carbohydrates. Vitamins- classification and functions have been discarded from 2020-21 syllabus.
Carbohydrates – Classification (aldoses and Ketoses), monosaccharides (glucose and fructose), D-L configuration,
oligosaccharides (sucrose, lactose,maltose), polysaccharides (starch, cellulose, glycogen); importance.
Proteins – Elementary idea of α– amino acids, peptide bond, polypeptides, proteins, primary structure, secondary structure, tertiary structure and quaternary structure (qualitative idea only), denaturation of proteins; enzymes.
Lipids and hormones, their classification and functions.
Vitamins: Classification and functions.
Nucleic Acids: DNA & RNA.
Unit – XV: Polymers (This chapter has been discarded from 2020-21 syllabus)
Classification – natural and synthetic, methods of polymerization (addition and Condensation), copolymerization. Some important polymers: natural and synthetic like poly, nylon, polyesters, Bakelite, rubber, biodegradable and non-biodegradable polymers.
Unit – XVI: Chemistry in Everyday Life (This chapter has been discarded from 2020-21 syllabus)
cals in medicines- analgesics, tranquilizers, antiseptics, disinfectants, antimicrobials, anti fertility drugs, antibiotics, antacids, antihistamines, antioxidants. Chemicals in food – preservatives, artificial, sweetening agents. Cleansing agents – soaps and detergents, cleansing action.
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