
The Central Board of Secondary Education (CBSE) has overhauled the Class 10 Board Exam structure for Science and Social Science. For the 2026 session, the Board is enforcing a strict "Subject-Segregation" rule in answer sheets to streamline the evaluation process and reduce marking errors.
| Subject | Mandatory Sections | Evaluator Focus |
| Science | Biology, Chemistry, Physics | Subject Specialist Check |
| Social Science | History, Geography, Pol Science, Economics | Specific Unit Evaluation |
To avoid losing marks due to structural errors, follow these CBSE new format instructions:
No Response Mixing: Writing a History answer in the Geography section will result in zero marks for that response.
Labeling: Every section must be clearly headed (e.g., "SECTION B: CHEMISTRY") on a fresh page.
No Revaluation for Format Errors: CBSE stated that responses ignored due to incorrect sectioning will not be reconsidered during the revaluation process.