CBSE Class 12 Chemistry Syllabus 2020-21: केंद्रीय माध्यमिक शिक्षा मंडल बोर्ड (CBSE ) के द्वारा कक्षा बारहवीं के रसायन विज्ञान (Chemistry) का संशोधित (Syllabus) पाठ्यक्रम 2020-21 जारी कर दिया गया है। इस वर्ष सीबीएसई ने रसायन विज्ञान (Chemistry) पाठ्यक्रम से कुछ इकाइयों (unit) को कम कर दिया है अभ्यार्थी इस पाठ्यक्रम की पीडीएफ नीचे दी गई लिंक के माध्यम से अथवा CBSE बोर्ड की ऑफिशियल वेबसाइट cbseacademics.nic.in पर जाकर डाउनलोड कर सकते हैं।
CBSE New Syllabus For Class 12 Chemistry 2020-21
Isolation of Elements
d- and f-Block Elements
Haloalkanes and Haloarenes
Alcohols, Phenols, and Ethers
Aldehydes, Ketones and Carboxylic Acids
Organic Compounds containing Nitrogen
Chemistry in Everyday Life
CBSE class 12 chemistry syllabus 2020-21 pdf
(Unit I) Solid State
Classification of solids based on different binding forces: molecular, ionic, covalent and metallic solids, amorphous and crystalline solids (elementary idea). Unit cell in two dimensional and three-dimensional lattices, calculation of density of unit cell, packing in solids, packing efficiency, voids, number of atoms per unit cell in a cubic unit cell, point defects.
(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.
(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.
(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).
(Unit V) Surface Chemistry
Adsorption ‐ physisorption and chemisorption, factors affecting adsorption of gases on solids, colloidal state: distinction between true solutions, colloids and suspension; lyophilic, lyophobic, multi‐molecular and macromolecular colloids; properties of colloids; Tyndall effect, Brownian movement, electrophoresis, coagulation.
(Unit VII) p‐BlockElements
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.
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: preparation properties and uses of Sulphur‐dioxide, Sulphuric Acid:properties and uses; 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 (structures only).
Group 18 Elements: General introduction, electronic configuration, occurrence, trends in physical and chemical properties, uses.
(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.
Lanthanoids ‐ Electronic configuration, oxidation states and lanthanoid contraction and its consequences.
(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.
(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).
(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.
Phenols: Nomenclature, methods of preparation, physical and chemical properties, acidic nature of phenol, electrophilic substitution reactions, uses of phenols.
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 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.
(Unit XIV) Biomolecules
Carbohydrates ‐ Classification (aldoses and ketoses), monosaccharides (glucose and fructose), D‐L configuration
Proteins ‐Elementary idea of ‐ amino acids, peptide bond, polypeptides, proteins, the structure of proteins ‐ primary, secondary, tertiary structure and quaternary structures (qualitative idea only), denaturation of proteins.
Nucleic Acids: DNA and RNA.
CBSE class 12 chemistry practical syllabus 2020-21
Class record and viva
CBSE New Pattern For Class 12 2020 Chemistry
Theoretical Paper: 70 marks
Practical/ Project Work: 30 Marks
CBSE class 12 chemistry question paper pattern 2020
Total No. of Questions
Type of Questions
Very Short Answer – 1 mark
Short Answer – 2 marks
Long Answer I – 3 marks
Long Answer II – 5 marks
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