How many chapters are there in the CBSE Class 10 Science Syllabus 2026-27?

The syllabus lists 14 practical experiments. They cover topics like pH, reactions, resistance, lenses, stomata and seed parts. Practical work carries 5 marks in internal assessment.

CBSE has not removed these topics from the syllabus. But Periodic Classification of Elements, Evolution, and Electric Motor, Electromagnetic Induction and Electric Generator will not come in the board exam. Schools will check them in class.

The paper has 39 questions. Section A Biology has 16, Section B Chemistry has 13 and Section C Physics has 10. Students must answer all questions in 3 hours.

Chemical Substances and World of Living carry the most marks. Each unit is worth 25 marks. Together, they make up 50 out of 80 theory marks.

CBSE Class 10 Science is a 100-mark subject. The theory paper carries 80 marks. The other 20 marks come from internal assessment, which includes school tests, portfolio and practical work.