CBSE Class 12 Chemistry Syllabus 2023-24: Check Topic Wise Weightage

Domain

Marks

Percentage

Remembering and Understanding:

Exhibit memory of previously learned material by recalling facts, terms, basic concepts, and answers. Demonstrate understanding of facts and ideas by organizing, comparing, translating, interpreting, giving descriptions, and stating main ideas

28

40

Applying: Solve problems in new situations by applying acquired knowledge, facts, techniques, and rules in a different way.

21

30

Analyzing, Evaluating, and Creating:

Examine and break information into parts by identifying motives or causes. Make inferences and find evidence to support generalizations. Present and defend opinions by making judgments about information, the validity of ideas, or the quality of work based on a set of criteria. Compile information together in a different way by combining elements in a new pattern or proposing alternative solutions.

21

30

S.No.

Title

No. of Periods

Marks

1

Solutions

10

7

2

Electrochemistry

12

9

3

Chemical Kinetics

10

7

4

d -and f -Block Elements

12

7

5

Coordination Compounds

12

7

6

Haloalkanes and Haloarenes

10

6

7

Alcohols, Phenols, and Ethers

10

6

8

Aldehydes, Ketones and Carboxylic Acids

10

8

9

Amines

10

6

10

Biomolecules

12

7

Total

70

Unit Name

Topics

Solutions

Solutions types, expressions of solid-liquid solution concentrations, the solubility of gases in liquids, solid solutions, and Raoult's law colligative properties: relative decrease in vapor pressure, increase in boiling point, decrease in freezing point, osmotic pressure, use of colligative qualities to determine molecular masses, anomalous molecular mass Van't Hoff component

Electrochemistry

Redox reactions, a cell's EMF, the potential of a typical electrode, the Nernst equation and how it applies to chemical cells, Conductance in electrolytic solutions, specific and molar conductivity, changes of conductivity with concentration, the relationship between Gibbs energy change and EMF of a cell, Electrolysis, Kohlrausch's Law, Galvanic and dry electrolytic cells, the lead accumulator, fuel cells, and corrosion are some related concepts.

Chemical Kinetics

Average and instantaneous reaction rates; concentration, temperature, and catalyst effects; order and molecularity of the reaction; rate law and specific rate constant; integrated rate equations and half-life (only for zero and first order reactions); collision theory concept (basic idea; no mathematical treatment); activation energy; Arrhenius equation.

d and f Block Elements

General introduction, electronic configuration, occurrence and properties of transition metals, general trends in the first-row transition metals' properties, including metallic character, ionization enthalpy, oxidation states, ionic radii, color, catalytic property, magnetic property, interstitial compounds, alloy formation, preparation, and K2Cr2O7 and KMnO4's preparation and properties. Electronic configuration, oxidation states, chemical reactivity, and lanthanoid contraction and its effects are some of the characteristics of lanthanoids. Electronic configuration, oxidation states, and comparison with lanthanoids for actinoids.

Coordination Compounds

Introduction to coordination compounds, ligands, number of coordinated atoms, color, magnetic characteristics, and forms, as well as the IUPAC nomenclature for mononuclear coordination compounds. Structure and stereoisomerism; bonding; Werner's theory; VBT; and CFT; and the significance of coordination compounds (in qualitative analysis, extraction of metals and biological system).

Haloalkanes and Haloarenes

Nomenclature, C-X bond type, physical and chemical characteristics, and optical rotation mechanism of substitution processes are all discussed in relation to haloalkanes. Haloarenes: C-X bond nature, substitution processes (Directive influence of halogen in monosubstituted compounds only). Dichloromethane, trichloromethane, tetrachloromethane, iodoform, freons, and DDT uses and environmental impacts.

Alcohols, Phenols and Ethers

Alcohols: nomenclature, preparation techniques, physical and chemical characteristics (only for primary alcohols), recognition of primary, secondary, and tertiary alcohols, mechanism of dehydration, and applications, with particular emphasis on methanol and ethanol. Phenols: nomenclature, synthesis techniques, physical and chemical characteristics, the acidity of phenol, electrophilic substitution processes, and applications. Ethers: nomenclature, preparation techniques, chemical and physical characteristics, and applications

Aldehydes, Ketones and Carboxylic Acids

Aldehydes and ketones: nomenclature, nature of the carbonyl group, synthesis techniques, physical and chemical characteristics, mechanism of nucleophilic addition, alpha hydrogen reactivity in aldehydes, applications. Nomenclature, acidic nature, preparation techniques, physical and chemical characteristics, and applications of carboxylic acids.

Amines

Identification of primary, secondary, and tertiary amines, as well as their nomenclature, classification, structure, methods of manufacture, and physical and chemical characteristics. Preparation, chemical interactions, and significance of diazonium salts in synthetic organic chemistry

Biomolecules

Aldoses and ketoses, monosaccharides (glucose and fructose), oligosaccharides with a D-L configuration (sucrose, lactose, maltose), and polysaccharides (starch, cellulose, glycogen) are all different types of carbohydrates. Proteins: the fundamental concepts include amino acids, peptide bonds, polypeptides, proteins, primary, secondary, tertiary, and quaternary structures (just a qualitative concept), denaturation of proteins, and enzymes. Hormones: A simple concept without regard to structure. Classification and uses of vitamins. DNA and RNA are nucleic acids.

Evaluation Scheme for Examination

Marks

Volumetric Analysis

08

Salt Analysis

08

Content-Based Experiment

06

Project Work and Viva

04

Class record and Viva

04

Total

30

Name

Topics included

Surface Chemistry

Making one lyophilic and one lyophobic sol (a) Starch, egg albumin, and gum in lyophilic sol Aluminum hydroxide, ferric hydroxide, and arsenic sulfide make up lyophobic sol. (b) Sol prepared in (a) above after being dialyzed. (c) Researching how emulsifying agents work to keep the emulsion of various oils stable.

Chemical Kinetics

(a) The impact of temperature and concentration on how quickly sodium thiosulfate and hydrochloric acid react. (b) Researching any of the following reaction rates: I The interaction of varying Iodide ion concentrations with Hydrogen Peroxide at ambient temperature (ii) Using a starch solution as an indicator, potassium iodate (KIO3) and sodium sulfite (Na2SO3) react (clock reaction).

Thermochemistry

Any of the aforementioned experiments (a) Copper sulfate or potassium nitrate dissolution enthalpy. (a) The enthalpy of strong acid (HCI) and strong base neutralization (NaOH). (c) Measuring the enthalpy change that occurs during the contact (creation of a hydrogen bond) between acetone and chloroform

Electrochemistry

Variation of cell potential in Zn/Zn2+|| Cu2+/Cu with change in concentration of electrolytes (CuSO4 or ZnSO4) at room temperature.

Chromatography

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

Preparation of Inorganic Compounds

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

Preparation of Organic Compounds

Any of the following chemicals being prepared Di-benzal acetone, p-nitro acetanilide, aniline yellow, and aniline dye are the first four ingredients.

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:

(a) Oxalic acid, (b) Ferrous Ammonium Sulphate (Students will be required to prepare standard solutions by weighing themselves).

Qualitative analysis

Determination of one anion and one cation in a given salt Cation: Pb2+, Cu2+ As3+, Aℓ3+, Fe3+, Mn2+, Zn2+, Ni2+, Ca2+, Sr2+, Ba2+, Mg2+, NH4 + Anions: (CO3) 2- , S2- , (SO3) 2- , (NO2) - , (SO4) 2- , Cℓ- , Br- , I- , (PO4) 3- , (C2O4) 2- , CH3COO- , NO3 - (Note: Insoluble salts excluded)