ISC Science Exam Pattern 2025: Know Marking Scheme & Exam Duration

Theory

Theory paper will include mainly 3 units and each will comprise different marks.

Unit- 1 (25 marks) will include the following topics.

• Solid state
• Solutions
• Electrochemistry
• Chemical kinetics
• Surface chemistry

Unit-2 (20 marks) will include the following topics.

• General Principles and Processes of Isolation of Elements
• p -Block Elements
• d -and f -Block Elements
• Coordination Compounds

Unit-3 (25 marks) will include the following topics.

• Haloalkanes and Haloarenes
• Alcohols, Phenols and Ethers
• Aldehydes, Ketones and Carboxylic Acids
• Organic Compounds containing Nitrogen
• Chemistry in Everyday Life

Project work

Students will have to make a project and assessment, which will be examined by a visitor examiner and teacher. Then, it will be approved by the council. 

Theory

Theory paper will carry 70 marks and the following topics will be asked in the paper.

• Electronic
• Current electricity
• Magnetic Effects of Current and Magnetism
• Electromagnetic Induction and AlternatingCurrents
• Electromagnetic Waves
• Dual Nature of Radiation and Matter
• Atoms and Nuclei
• Electronic Devices

Project work

Students have to prepare a project and practice on a topic given by the teacher. It will be examined by a teacher and a visitor examiner, then, it will be approved by the council. 

Theory

Theory paper will consist of 70 marks and students have no choice; they have to answer all the questions. Following topics will be included in the Theory exam.

Reproduction- 16 marks

Genetics and Evolution- 15 marks

Biology and Human Welfare- 14 marks

Biotechnology and its Applications- 10 marks

Ecology and Environment- 15 marks

Project work

Students have to prepare a project and practice on a topic given by the teacher. It will be examined by a teacher and a visitor examiner, then, it will be approved by the council.