CBSE Syllabus For Class 12 Chemistry 2020-21 (Revised) | Download New Syllabus PDF

CBSE  Syllabus For Class 12 ChemistryRevised CBSE Syllabus For Class 12 Chemistry 2020-21: Are you preparing for the Class 12 Chemistry Exam? Do you have the latest CBSE Syllabus?

Don’t worry! Here we are providing a complete guide on the Revised CBSE Syllabus For Class 12 Chemistry 2020-21. You can easily check the CBSE Class 12 Chemistry syllabus and download PDF from the article below.

Revised CBSE Syllabus For Class 12 Chemistry 2020-21

Chemistry is an important subject for CBSE Science Stream. It is an essential subject for those students who want to pursue a Chemical engineering or a medical degree.

HRD Minister Ramesh Nishank announced a major CBSE syllabus reduction with 30% of the syllabus slashed for the year 2020-21 on July 7 which was soon followed by an official notification by CBSE on the same.

You should have a clear concept in CBSE Class 12 Chemistry to score better grades in the 12th CBSE Board exam. You should have a depth concept of Class 11 and Class 12 Chemistry to score better marks in the various entrance exam.

With a better concept on the latest Class 12 Syllabus, you can secure good marks. You already know CBSE updates its syllabus almost every year to provide the students the latest syllabus. 

Here you can check CBSE Syllabus For Class 12 Chemistry and NCERT Textbook based on the latest syllabus

Download 12th Class Chemistry Revised Syllabus PDF 2021

Deleted Class 12 Chemistry Syllabus

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Revised CBSE Syllabus For Class 12 Chemistry 2021

Here you can check the latest revised CBSE 12th Syllabus For Chemistry.

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, the solubility of gases in liquids, solid solutions, Raoult’s law, colligative properties ‐ the relative lowering of vapor pressure, the 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: the 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, color, 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, the 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 Syllabus For Class 12 Chemistry Practicals

Micro-chemical methods are available for several of the practical experiments. Wherever possible, such techniques should be used.


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

Preparation of Inorganic Compounds

  • Preparation of double salt of Ferrous Ammonium Sulphate of Potash Alum. Preparation of Potassium Ferric Oxalate.

Tests for the functional groups present in organic compounds:

  • Unsaturation, alcoholic, phenolic, aldehydic, ketonic, carboxylic, and amino (Primary) groups.

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

  • Determination of concentration/ molarity of KMnO4 solution by titrating it against a standard solution of:
    • Oxalic acid,
    • Ferrous ammonium sulfate

(Students will be required to prepare standard solutions by weighing themselves).

Qualitative analysis

Determination of one cation and one anion in a given salt.

  • Cation : Pb2+, Cu2+ As3+, Aℓ3+, Fe3+, Mn2+, Zn2+, Cu2+, Ni2+, Ca2+, Sr2+, Ba2+, Mg2+, NH +
  • Anions: (CO3)2-, S2-, (SO3)2-, (NO2)-, (SO4)2-, Cℓ, Br, I, PO3- 4, (C2O4)2-, CH3COO,NO –

(Note: Insoluble salts excluded)

Must Read: CBSE 12th Chemistry 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
  • Study of quantity of casein present in different samples
  • 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
  • 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

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Deleted CBSE Syllabus For Class 12 Chemistry 2021

Here you can check and download the Deleted CBSE Syllabus For Class 12 Chemistry.

S No


The portion to be Reduced


Solid State

Electrical and magnetic properties. Band theory of metals, conductors, semiconductors, and insulators, and n and p-type semiconductors.



Abnormal molecular mass, Van’t Hoff factor



Lead accumulator, fuel cells, corrosion, law of electrolysis (elementary idea), dry cell- electrolytic cells and Galvaniccells,


Chemical Kinetics

Concept of collision theory (elementary idea, no mathematical treatment), activation energy, Arrhenius equation.


Surface Chemistry

emulsion – types of emulsions, catalysis: homogenous and heterogeneous, activity and selectivity of solid catalysts;

enzyme catalysis,


General Principles and Processes of Isolation of Elements

Entire unit


p-Block Elements

Preparation and properties of Phosphine, Sulphuric Acid: industrial process of manufacture, Oxides of Nitrogen (Structure only); Phosphorus – allotropic forms, compounds of Phosphorus: Preparation and properties of Halides and Oxo acids (elementary idea only).


d and f Block Elements

Chemical reactivity of lanthanoids, Actinoids -Electronic configuration, oxidation states and comparison with lanthanoids. Preparation and properties of KMnO4 and K2Cr2O7


Coordination Compounds

Structure and stereoisomerism, importance of coordination compounds (in qualitative analysis, extraction of metals and biological system).


Haloalkanes and Haloarenes

Uses and environmental effects of -dichloromethane, trichloromethane, tetrachloromethane, iodoform, freons, DDT.


Alcohols, Phenols and Ethers

uses with special reference to methanol and ethanol.


Aldehydes, Ketones and Carboxylic Acid



Diazonium salts: Preparation, chemical reactions and importance in synthetic organic chemistry.



Oligosaccharides (sucrose, lactose, maltose), polysaccharides (starch, cellulose, glycogen), the importance of carbohydrates.

Vitamins– classification and functions. Enzymes. Hormones – Elementary idea excluding structure.



entire chapter


Chemistry in Everyday life

entire chapter

Deleted CBSE Syllabus For Class 12 Chemistry Practicals

The following portions should be considered deleted.

  • Surface Chemistry
    • Preparation of one lyophilic and one lyophobic sol Lyophilic sol – starch, egg albumin and gum Lyophobic sol – aluminium hydroxide, ferric hydroxide, arsenous
    • Dialysis of sol-prepared in (a)above.
    • Study of the role of emulsifying agents in stabilizing the emulsion of different
  • Chemical Kinetics
    • Effect of concentration and temperature on the rate of reaction between Sodium Thiosulphate and Hydrochloric
    • Study of reaction rates of any one of the following:
      • The reaction of Iodide ion with Hydrogen Peroxide at room temperature using different concentration of
      • The reaction between Potassium Iodate, (KIO3) and Sodium Sulphite: (Na2SO3)using starch solution as an indicator (clock reaction).
  • Thermochemistry Any one of the following experiments
    • Enthalpy of dissolution of Copper Sulphate or Potassium
    • Enthalpy of neutralization of strong acid (HCI) and strong base(NaOH).
    • Determination of enthalpy change during interaction (Hydrogen bond formation) between Acetone and
  • Electrochemistry Variation of cell potential in Zn/Zn 2+|| Cu2+/Cu with a change in concentration of electrolytes (CuSO4 or ZnSO4) at room
  • Preparation of Organic Compounds Preparation of any one of the following compounds
    • Acetanilide
    • Di-benzal Acetone
    • p-Nitroacetanilide

Aniline yellow or 2 – Naphthol Anilinedye

Updated CBSE Pattern for Class 12 Chemistry 2020-21

  •  Theoretical Paper: 70 marks
  •  Practical/ Project Work: 30 Marks

 CBSE Class 12 Chemistry Question Paper Structure:

Time Duration

3 Hours

Maximum Marks

70 marks

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

Download CBSE NCERT Textbook For Class 12 Chemistry 

NCERT Chemistry book has two parts. It is a perfect choice if you want to attempt any competitive exams like JEE, NEET, etc.

This book will provide you a detailed explanation on every topic. So you can easily develop a depth concept. Here you can see the detailed explanation with the combination of diagrams and theoretical concepts.

You can download complete Class 12 Chemistry Books in Hindi and English Medium from the links below.

Here you can download Chapter-wise NCERT Textbook for Class 12 Chemistry for Hindi and English Medium.

Download Chapter-Wise Class 12 NCERT Chemistry Textbooks PDF For English Medium

Here we are providing the chapter-wise NCERT Class 12 Chemistry Textbooks PDF. You can read it online or download it easily.

Class 12 Chemistry Part-1 

Class 12 Chemistry Part-2 

Download Chapter-Wise Class 12 NCERT Chemistry Textbooks PDF For Hindi Medium

Here we are providing the chapter-wise NCERT Class 12 Chemistry Textbooks PDF. You can read it online or download it easily.

रासांयन भाग 1

रासांयन भाग 2

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