📘 CBSE Class 10 Science Examination Pattern 2025-26 1. Overall Structure Component Marks Details Board / Annual Exam (Theory) 80 3 Hours, NCERT-based, includes MCQs, case-based, SA, LA, HOTS Internal Assessment 20 Periodic tests, practicals, projects, portfolio Total 100 Final score (80+20) 2. Weightage of Units in Theory Paper (80 …