Download PDF of Latest (30% Reduced) CBSE Class 12 Chemistry Syllabus (2020-21)

The Central Board of Secondary Education, due to the Covid-19 pandemic has reduced the CBSE class 12 chemistry syllabus (2020-21) by 30%. CBSE class 12th syllabus 2020-21 is available at VSI for students to download in pdf format. Students must try to cover the entire chemistry syllabus for the upcoming CBSE class 12 Chemistry Exam. For the best preparation for the Chemistry exam, students must know the CBSE class 12 chemistry marking evaluation and revised paper pattern. 

From this page, Class 12 students can download the latest and updated CBSE class 12 Chemistry Syllabus and practical syllabus 2020-21 as well. Before starting the preparation students must go through with the revised syllabus.

For updated and latest information related to CBSE class 12th Syllabus 2020-21, students can bookmark this page.  

Download PDF of (New) CBSE Class 12 Chemistry Syllabus (2020-21)- Download PDF 

Students must download CBSE class 12 chemistry syllabus 2020-21 pdf for future reference from VSI. The CBSE class 12th chemistry syllabus has been reduced by 30% from the entire syllabus by the Central Board of Secondary Education for this academic year 2020-21. Therefore, students must go thoroughly with the Reduced CBSE class 12 chemistry syllabus 2020-21 given below. 

(30% Reduced) CBSE Class 12 Chemistry Syllabus (2020-21)      Download 

 

Unit 1: 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 2: 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 3: 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 4: 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 5: 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 6: p-Block Elements                                                                                        

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 8: 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 9: Coordination Compounds 

Coordination compounds ‐ Introduction, ligands, coordination number, color, magnetic properties and shapes,  IUPAC nomenclature of mononuclear coordination compounds. Bonding,  Werner’s theory, VBT, and CFT.

 

Unit 10:  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 11: 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 12: 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 13: Amines

Amines: Nomenclature, classification, structure, methods of preparation, physical and chemical properties, uses, identification of primary, secondary and tertiary amines.

 

Unit 14: 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 Syllabus (2020-21): Deleted Topics 

Due to the pandemic, the CBSE has deleted a few of the topics from the CBSE class 12th chemistry syllabus (2020-21). Students preparing for the upcoming CBSE class XIIth Chemistry examination must know about all the Deleted Topics of the CBSE class 12 chemistry syllabus 2020-21. Given below the deleted topics of the CBSE chemistry syllabus are given in detail. 

CBSE Class 12 Chemistry Syllabus (2020-21)- Deleted TopicsDownload 

The deleted topics of the CBSE class 12th Chemistry (2020-21) is explained in detail in the below table: 

Chapters Reduced Topics of the CBSE Class 12 Chemistry Syllabus (2020-21)
Chapter 1: Solid StateElectrical and magnetic properties. Band theory of metals, conductors,  semiconductors and insulators, and n and p-type semiconductors.
Chapter 2: SolutionsAbnormal molecular mass, Van’t Hoff factor
Chapter 3: ElectrochemistryLead accumulator, fuel cells, corrosion, law of electrolysis (elementary idea), dry cell- electrolytic cells and Galvanic Cells
Chapter 4: Chemical KineticsConcept of collision theory (elementary idea, no mathematical treatment), activation energy, Arrhenius equation
Chapter 5: Surface ChemistryEmulsion – types of emulsions, catalysis: homogeneous and heterogeneous, activity and selectivity of solid catalysts; enzyme catalysis
Chapter 6: General Principles and Processes of Isolation of ElementsEntire unit
Chapter 7: p-Block ElementsPreparation 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)
Chapter 8: d and f Block ElementsChemical reactivity of lanthanides, Actinides -Electronic configuration, oxidation states and comparison with lanthanide. Preparation and properties of KMnO4  and K2Cr2O7
Chapter 9: Coordination CompoundsStructure and stereoisomerism, the importance of coordination compounds (in qualitative analysis, extraction of metals, and biological system).
Chapter 10: Haloalkanes and HaloarenesUses and environmental effects of -dichloromethane, trichloromethane, tetrachloromethane, iodoform, freons, DDT.
Chapter 11: Alcohols, Phenols, and EthersUses with special reference to methanol and ethanol.
Chapter 12: Aldehydes, Ketones, and Carboxylic AcidNA
Chapter 13: Amines Diazonium salts: Preparation, chemical reactions, and importance in synthetic organic chemistry.
Chapter 14: BiomoleculesOligosaccharides  (sucrose, lactose, maltose), polysaccharides (starch, cellulose, glycogen), the importance of carbohydrates. Vitamins– classification and functions. Enzymes. Hormones – Elementary idea excluding structure.
Chapter 15: PolymersEntire chapter

 

CBSE Class 12 Chemistry Marking Scheme 2020-21

In this academic year, the CBSE has reduced 30% from the entire syllabus. Therefore, students must check out the revised CBSE class 12 Chemistry marking scheme for the upcoming Chemistry examination 2021. Given below the marking scheme for Chemistry class 12 is explained. 

 

UnitsMarks
Solid State23
Solutions
Electrochemistry 
Chemical kinetics 
Surface chemistry 
P- Block elements19
D- and f- block elements
Coordination compounds
Haloalkanes and Haloarenes28
Alcohols, phenols, and ethers
Aldehydes, ketones, and carboxylic acids
Amines 
Biomolecules 
Total70

Download PDF of Reduced CBSE Class 12 Practical Syllabus for Chemistry (2020-21)

For scoring good marks in the upcoming CBSE chemistry board exam 2021, it is a must for students to also prepare for the CBSE class 12 practical syllabus for Chemistry 2020-21. Few of the topics from the CBSE practical syllabus of chemistry have also been removed.  From this page, students can download the CBSE class 12 practical syllabus for chemistry 2020-21, download all the deleted topics of the CBSE chemistry practical syllabus of class 12, and also the Revised CBSE Class 12 Chemistry Practical Marking scheme 2020-21. 

Download Revised CBSE Class 12 Practical Syllabus for Chemistry 2020-21Download Here 

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

 Chromatography

  1. i) Separation of pigments from extracts of leaves and flowers by paper chromatography and determination of Rf values.
  2. ii) Separation of constituents present in an inorganic mixture containing two cations only (constituents having large differences in Rf values to be provided).
  3. Preparation of Inorganic Compounds

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

  1. Tests for the functional groups present in organic compounds: Unsaturation, alcoholic, phenolic, aldehydic, ketonic, carboxylic, and amino (Primary) groups.
  2. Characteristic tests of carbohydrates, fats, and proteins in pure samples and their detection in given foodstuffs.
  3. Determination of concentration/ molarity of KMnO4 solution by titrating it against a standard solution of:
  4. i) Oxalic Acid,
  5. ii) Ferrous Ammonium Sulphate

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

  1. 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+, NH4

Anions: (CO3)2-, S2-, (SO3)2-, (NO2)-, (SO4)2-, Cℓ-, Br-, I-, PO3- 4, (C2O4)2-, CH3COO-, NO 3

(Note: Insoluble salts excluded) 

PROJECT

Scientific investigations involving laboratory testing and collecting information from other sources

A few suggested Projects.

  1. Study of the presence of oxalate ions in guava fruit at different stages of ripening.
  2. Study of quantity of casein present in different samples of milk.
  3.  Preparation of soyabean milk and its comparison with the natural milk with respect to curd formation, the effect of temperature, etc.
  4. Study of the effect of Potassium Bisulphate as food preservative under various conditions
  5. (temperature, concentration, time, etc.)
  6. Study of digestion of starch by salivary amylase and the effect of pH and temperature onit.
  7. Comparative study of the rate of fermentation of the following materials: wheat flour, gram flour, potato juice, carrot juice, etc.
  8. Extraction of essential oils present in Saunf (aniseed), Ajwain (carum), Illaichi(cardamom).
  9. Study of common food adulterants in fat, oil, butter, sugar, turmeric powder, chili powder, and pepper. Note: Any other investigatory project, which involves about 10 periods of work, can be chosen with the approval of the teacher.
  10. Micro-chemical methods are available for several of the practical experiments. Wherever possible, such techniques should be used.

Chromatography

  1. i) Separation of pigments from extracts of leaves and flowers by paper chromatography and determination of Rf values.
  2. ii) Separation of constituents present in an inorganic mixture containing two cations only (constituents having large differences in Rf values to be provided).
  3. Preparation of Inorganic Compounds

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

  1. Tests for the functional groups present in organic compounds: 

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

  1. Characteristic tests of carbohydrates, fats, and proteins in pure samples and their

detection in given foodstuffs.

  1. Determination of concentration/ molarity of KMnO4 solution by titrating it against a standard solution of:
  2. i) Oxalic Acid,
  3. ii) Ferrous Ammonium Sulphate

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

  1. 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+, NH4

Anions: (CO3)2-, S2-, (SO3)2-, (NO2)-, (SO4)2-, Cℓ-, Br-, I-, PO3- 4, (C2O4)2-, CH3COO-, NO 3

(Note: Insoluble salts excluded) 

PROJECT

Scientific investigations involving laboratory testing and collecting information from other sources

A few suggested Projects.

  1. Study of the presence of oxalate ions in guava fruit at different stages of ripening.
  2. Study of quantity of casein present in different samples of milk.
  3. Preparation of soyabean milk and its comparison with the natural milk with respect to curd formation, the effect of temperature, etc.
  4. Study of the effect of Potassium Bisulphate as food preservative under various conditions
  5. (temperature, concentration, time, etc.)
  6. Study of digestion of starch by salivary amylase and the effect of pH and temperature onit.
  7. Comparative study of the rate of fermentation of the following materials: wheat flour, gram flour, potato juice, carrot juice, etc.
  8. Extraction of essential oils present in Saunf (aniseed), Ajwain (carum), Illaichi(cardamom).
  9. Study of common food adulterants in fat, oil, butter, sugar, turmeric powder, chili powder, and pepper. Note: Any other investigatory project, which involves about 10 periods of work, can be chosen with the approval of the teacher.

CBSE Class 12 Practical Syllabus for Chemistry 2020-21: All Deleted Topics

Students can download and go through the CBSE class 12 practical syllabus for Chemistry 2020-21 all deleted topics. 

Deleted Topics of CBSE Class 12 Practical Syllabus for Chemistry 2020-21Download Here

Revised CBSE Class 12 Practical Syllabus for Chemistry 2020-21: Marking Scheme

The detailed marking scheme of Revised CBSE class 12 Practical syllabus for chemistry is explained below:

Evaluation Scheme for Chemistry Practical 2020-21Marks
Salt Analysis08
Volumetric Analysis08
Content Based Experiment06
Project Work04
Class record and viva04
Total30

 

CBSE Class 12 Chemistry Examination 2020-21: Preparation Tips

To score good marks for CBSE class 12 Chemistry Examination 2020-21 students must follow the given preparation tips.

  1. For the preparation for the upcoming exam, students have to complete the CBSE Class 12 Chemistry syllabus and practical syllabus 2020-21.
  2. Students must learn the formulas and chemical equations very well. 
  3. Class 12 Students should cover the entire CBSE Class 12 Chemistry syllabus. 
  4. To stay focused throughout the preparation students must eat healthily and exercise yoga daily. 
  5. Once the completion of the Chemistry syllabus, students must solve the CBSE class 12 Chemistry sample papers.

Once class 12 gets over, students can go for various endeavors. Students can also go for CA preparation after class 12th. The dream of becoming a CA can easily be accomplished if students join the best CA institute “VSI Jaipur”. This place offers its students the best education with an outstanding faculty. 

Frequently Asked Questions  

Q1. Is NCERT sufficient for the preparation of the CBSE class 12 Chemistry examination 2020-21?

Ans: Yes, NCERT is sufficient for the preparation of CBSE class 12 Chemistry examination 2020-21. The NCERT books have detailed explanations of every topic with understandable language. 

Q2. Does CBSE class 12 practical syllabus for Chemistry 2020-21 has also been revised?

Ans: Yes, the Central Board of Secondary Education has also reduced a few of the topics from the CBSE class 12 practical syllabus for Chemistry 2020-21. The revised CBSE class 12 Chemistry practical syllabus for chemistry is explained clearly on this page above. 

Q3What topics are Deleted from the CBSE Class 12 Chemistry Syllabus for the upcoming exam?

Ans: The CBSE has removed a few of the chapters and topics from the CBSE class 12 chemistry syllabus 2020-21. All the deleted topics of CBSE Class 12 syllabus 2020-21 have been mentioned above on this page. 

Q4. What are the preparation tips for CBSE class 12 upcoming Exam 2020-21?

Ans: To prepare for CBSE class 12 chemistry exam 2020-21, preparation tips are mentioned above on this page. For the CBSE class 12 board exam preparation 2020-21 for the rest of the subjects click on the given link.