What should I revise in last 24 hours for Class 10 Science?

The Central Board of Secondary Education Class 10 Science Board Exam 2026 is scheduled for February 25, 2026, students must shift from learning new concepts to focused revision of high-scoring topics, formulas, and diagrams.

This final 24-hour period is important for consolidating your understanding, reinforcing key ideas, and building confidence before entering the examination hall. 

A smart, structured revision plan in the last 24 hours can make the difference between average and good performance, especially in a subject like Science where clarity, step-wise answers, and accurate presentation are essential for scoring higher marks.

Most Expected Questions for CBSE Class 10 Science 2026

Class 10 Science Revision Plan for Last 24 hours Before Board Exam

Here’s how you can revise CBSE Class 10 Science in the last 24 hours before the exam:

1. Revise Important Formulas and Numericals

Physics numericals are scored if formulas are clear. In the last 24 hours, quickly revise all important formulas from chapters like Electricity, Light (Reflection and Refraction), and Magnetic Effects of Electric Current. Go through 2–3 solved examples from each chapter just to refresh your calculation steps and units. 

2. Go Through Chemical Reactions and Equations

Chemistry requires accuracy. Revise balanced chemical equations, types of reactions, properties of acids and bases, carbon compounds, and important reactions from Metals and Non-metals. Focus on reaction names, conditions, and examples rather than lengthy explanations.

3. Revise Biology Diagrams and Processes

Biology carries significant weightage. In the final 24 hours, revise labelled diagrams such as the human heart, brain, eye, nephron, and reproductive organs. Also revise key processes like Life Processes, Control and Coordination, and How do Organisms Reproduce. 

4. Practice Case-Based and Competency Questions

CBSE now includes competency-based and case-study questions. Revise previously solved sample paper case-based questions to understand how answers are framed. Focus on application-based reasoning rather than memorised definitions.

5. Review Important Definitions and Keywords

Science answers must include proper terminology. Quickly revise definitions of key terms such as oxidation, reduction, refraction, focal length, pollination, and heredity. Using correct scientific keywords improves scoring potential.

6. Revise Commonly Asked Topics

In the last 24 hours, prioritise high-weightage chapters instead of low-weightage ones. Focus more on Electricity, Light, Chemical Reactions, Carbon and Its Compounds, Life Processes, and Environment-related chapters. 

7. Avoid These Mistakes in the Last 24 Hours

Do not start a completely new chapter. Do not attempt very tough mock tests that may reduce confidence. Avoid late-night cramming. Instead, revise calmly, sleep properly, and stay mentally fresh for the exam.

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