ISC Class 12 Chemistry Syllabus 2024-25 | PDF Download

Revised: ISC Class 12 Chemistry Syllabus 2024-25

ISC Class 12 syllabus is a detailed set of content that covers all the topics taught in previous classes in a deeper way, which also makes it more extensive and tougher to cover for some students. The first step for any student to prepare for ISC Board exams is to have a clear understanding of the syllabus.

Chemistry is one of the few subjects that students really find interesting. Concepts of class 12 are directly asked in competitive examinations like JEE & NEET. It prepares you for a career in various domains like Pharmaceutical research, environmental causes, etc. 

Like the ISC Class 12 Chemistry Syllabus, students can also check out the Syllabus of Class 12 Physical Education or ISC Class 12 Computer Applications to plan their exams accordingly. Students can create a combined timetable for these exams to perform well and manage their time.

In this page, we have provided direct and free access to the Class 12 Chemistry Syllabus PDF for the 2024-25 session.

2024-25 Latest Syllabus 

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ISC Class 12 Chemistry Syllabus 2024-25

Updated ISC Class 12 Chemistry Syllabus 2024-25

Here you will get an overview of the topics that were deleted and added by CISCE. Having an understanding of the updated syllabus is crucial for exam preparation. 

Deleted Topics

Chapter 1: Solid State (whole chapter)

Chapter 5: General Principles and Processes of Isolation of Elements (full chapter)

Chapter 6: Inorganic Chemistry (whole chapter)

Chapter 7:p-  Block Elements (full chapter)

Chapter 15: Chemistry in Everyday Life (full chapter) 

Added Topics 

Chapter 2: Solutions: van’t Hoff-Boyle’s Law, van’t Hoff-Charles’ Law, van’t Hoff-Avogadro’s Law. Abnormal molecular mass: modification of the formula of collative properties based on the van't Hoff factor. Simple problems. Calculation of the degree of dissociation and association. Collision Theory, 

Chapter 4: d-Block Elements: potassium permanganate, potassium dichromate, stability of coordination compounds (explain stability based on the magnitude of K).

Chapter 6: Haloalkanes and Haloarenes: Uses and Environmental Effects of Dichloromethane, Trichloromethane, Tetrachloromethane, Iodoform, Freons, and DDT.

Chapter 7: Alcohols, Phenols, and Ethers: Aryl Ethers. 

Class 12 ISC Chemistry Syllabus 2025

ISC Class 12  Chemistry Subject 2024-25 consists of two papers Paper I & Paper II. 

Paper I: Theory: 3 hours ( 70 marks)

Paper II: Consists of a Total of 30 Marks which are divided as follows

1. Practical: 3 hours (15 marks)
2. Project Work (10 marks)
3. Practical File (5 marks)

ISC Chemistry Class 12 Syllabus- PAPER II 

Paper II will consist of a total of 30 marks which will be distributed into practical, project work, and practical files. 

Paper II-  Practical, Practical Work & Practical File

Practical:

For Practical work candidates are required to complete the following experiments:

1. Titrations

Oxidation-reduction titrations: potassium manganate (VII) / ammonium iron (II) sulfate; potassium manganate (VII) / oxalic acid.

The candidate may be required to determine the percentage purity of a compound and the number of molecules of water of crystallization in hydrated salts. In such experiments, sufficient working details including recognition of the end point will be given.

Candidates will be required to calculate:

• Molarity

• Concentration in grams L-1 / molecular mass

• Number of molecules of water of crystallisation/ percentage purity.

NOTE: Molarity must be calculated upto 4 decimal places at least, in order to avoid error.

• Concordant reading is to be used for titre value. Concordant reading is two consecutive values which are exactly the same. Average will not be accepted as titre value.

• The table is to be completed in ink only. Pencil is not to be used.

• Overwriting will not be accepted in the tabular column.

Observations:

• Pipette size (should be same for all the candidates at the centre).

• Titre value (concordant value).

2. Study of the rate of reaction

The candidates will be required, having been given full instructions, to carry out an experiment on the rate of reaction, e.g. reaction between sodium thiosulphate and hydrochloric acid

(using different concentrations for either), magnesium and dil. sulphuric acid/ dil. hydrochloric acid (using different concentrations).

• Graph of volume vs. time and its interpretation.
• Relationship between concentration and rate, volume and rate, and time and rate.

3. Identification of the following compounds and functional groups based on observations

• Alcoholic group - glycerol
• Aldehyde group- formaldehyde
•  Ketonic group – acetone
• Carboxylic group – benzoic acid
• Amino group - aniline

*Please Note: Carbylamine and acrolein tests should not be performed.

The student should learn to differentiate between colours, solutions, ring, and precipitate.

4. Characteristic tests of carbohydrates and proteins

• Carbohydrates – glucose
• Proteins – powdered milk

Identification should be of ‘Carbohydrate’ and ‘Protein’ not of individual substances.

5. Experiments related to pH change using pH paper or universal indicator.

• Determination of pH of some solutions obtained from fruit juice, solutions of known and varied concentrations of acids, bases, and salts.
•  Comparison of pH of the solutions of strong and weak acids of the same concentration.

Use of universal indicator/pH paper must be taught to the students.

6. Electrochemistry

• Setting up a simple voltaic cell.
• Variation of cell potential in Zn/Zn²⁺//Cu²⁺/Cu with change in concentration of electrolyte (Cu SO₄, Zn SO₄) at room temperature.

7. Qualitative analysis

Qualitative analysis: identification of a single salt containing one anion and one cation:

Anions: CO₃^2-, NO^2-, S2-, SO₃^2-, SO₄^2-, NO₃^-,  CH3COO^-, Cl^-, Br^-, I^-, C₂O₄^2-, PO₄^3-.

Cations: NH₄²⁺, Pb²⁺, Cu²⁺, Al³⁺, Fe³⁺, Zn²⁺, Mn²⁺, Ni²⁺, Co²⁺, Ba²⁺, Sr²⁺, Ca²⁺, Mg²⁺.

NOTE: Chromyl chloride test not to be performed. For wet test of anions, sodium carbonate extract must be used (except for carbonate). (Insoluble salts such as lead sulphate, barium sulphate, calcium sulphate, strontium sulphate will not be given).

Anions: Dilute acid group –  CO₃^2-, NO^2-, S^2-, SO₃^2-

Concentrated Acid Group – NO₃^-,  Cl^-, Br^-, I^-, CH₃COO^-,

Special Group - SO₄^2-, PO₄^3-, C₂O₄^2-

Cations: Group Zero: NH₄²⁺

Group I: Pb²⁺

Group II:  Cu²⁺, Pb²⁺

Group III:  Al³⁺, Fe³⁺

Group IV:Zn²⁺, Mn²⁺, Ni²⁺, Co²⁺

Group V: Ba²⁺, Sr²⁺, Ca²⁺, Mg²⁺

Group VI: Mg²⁺

NOTE:

• Formal analytical procedure is required for Qualitative Analysis.
• Specific solvent for O.S. to be used;
• Before adding Group III reagents to the filtrate of Group II, H2S must be removed followed by boiling with conc. Nitric acid.
• The right order for buffer (NH4Cl and NH4OH) must be used.
• The flame test with the precipitate obtained in Group V for Ba²⁺, Sr²⁺, Ca²⁺ will also be accepted as a confirmatory test. 

For wet test of anions, sodium carbonate extract must be used (except for carbonate).

Project Work 

The project work is to be assessed by a Visiting Examiner appointed locally and approved by the Council.

The candidate is to creatively execute one project/assignment on an aspect of Chemistry. Teachers may assign or students may select a topic of their choice. Following is only a suggestive list of projects.

Suggested Evaluation Criteria for Project Work:

1. Amino acids: Peptides, structure and classification, proteins structure and their role in the growth of living beings.

2. Nucleic Acid: DNA and RNA – their structure. Unique nature. Importance in evolution and their characteristic features.

3. Carbohydrates and their metabolism, Blood - haemoglobin, and respiration.

4. Vitamins and hormones

5. Simple idea of chemical evolution.

6. Natural polymers (any five) - structure, characteristics, uses. Synthetic polymers (any five) - method of preparation, structure, characteristics, and uses.

7. Types of Dyes - methods of preparation, characteristics, and uses.

8. Chemicals in medicines: antiseptics, antibiotics, antacids, etc., and their uses.

9. Preparation of soap, nail polish, boot polish, varnish, nail polish remover, shampoo, and perfumes.

10. Chemicals and chemical processes in forensic studies.

11. Insecticides, pesticides, and chemical fertilisers.

12. Ancient Indian medicines and medicinal plants.

13. Organic Chemistry in Nutrition, Food Science and Biotechnology.

14. Effect of Green House Gases.

15. How Plastics have changed the world, both socially and economically.

Practical File 

The Visiting Examiner is required to assess students on the basis of the Chemistry Practical file maintained by them during the academic year.