CBSE Class 10 Science Board Exam 2026 is scheduled to be held on February 25, 2026. The exam will be conducted in pen-and-paper format from 10:30 AM to 1:30 PM. The overall Phase 1 board examinations will run from February 17 to March 11, 2026.
The Science paper will include important diagram-based questions, especially from Physics and Biology. Proper practice of ray diagrams and labeled biological diagrams can help students score full marks and improve overall performance. To prepare effectively, students should revise through focused one-shot videos and regular practice to strengthen concepts and build confidence.
1) Light – Reflection & Refraction One Shot (Ray Diagrams)
The chapter Light – Reflection and Refraction is extremely important for the board exam. Many questions are based on ray diagrams of mirrors and lenses. Students must understand how to draw diagrams step-by-step using proper rules.
From this one-shot video, students can revise:
-
Ray diagrams for concave mirror
-
Ray diagrams for convex mirror
-
Image formation by concave lens
-
Image formation by convex lens
-
Rules for drawing rays correctly
-
Sign convention basics
Ray diagrams should always be drawn neatly using a pencil and ruler. Arrows must be clearly shown to indicate the direction of light. Even a small mistake in drawing can lead to loss of marks. Practicing this chapter regularly ensures accuracy and confidence in the exam.
2) Human Eye & the Colourful World One Shot
This chapter is very important for both theory and diagram-based questions. The structure of the human eye is frequently asked in board exams. Students must focus on clear labeling and correct representation.
Important diagrams include:
-
Structure of the human eye
-
Defects of vision, such as myopia and hypermetropia
-
Ray diagrams showingthe correction of defects
-
Dispersion of light using a prism
Understanding how the eye forms images helps students answer application-based questions. The correction diagrams are particularly important because they test conceptual clarity. Practicing this chapter from a one-shot video helps students revise all concepts quickly and effectively.
3) Life Processes One Shot
In Biology, the chapter Life Processes carries significant weightage. This chapter includes important diagrams that are commonly asked in the board exam.
Key diagrams to revise:
-
Human digestive system
-
Human respiratory system
-
Nephron (excretory system)
-
Basic structure of the heart (if included in syllabus)
These diagrams must be drawn neatly with proper labeling. Arrows should indicate flow, especially in the digestive and respiratory systems. Understanding the functions along with the diagrams is very important because many questions combine theory and diagram-based explanations.
The one-shot video for Life Processes helps students revise the entire chapter in a short time, making it ideal for quick preparation before the exam.
4) Complete Class 10 Biology in One Video
For overall Biology revision, a complete one-video session is very helpful. It covers all major chapters and important diagrams in one place. This is especially useful during final revision days.
This video helps students:
-
Revise all key Biology chapters
-
Review important diagrams
-
Strengthen conceptual understanding
-
Prepare for short-answer and long-answer questions
Biology diagrams are scoring sections in the Science paper. Clear drawing, correct labeling, and neat presentation can help students secure full marks. Regular practice improves speed and accuracy.
Complete Class 10 Biology Playlist
Why Diagrams Are Important in CBSE Class 10 Board Exams?
In the Central Board of Secondary Education Class 10 Science exam, diagrams are not just optional additions; they are often directly asked in questions. Some questions require drawing, while others require labeling. Therefore, students must:
-
Practice diagrams daily
-
Use proper drawing tools
-
Avoid overwriting
-
Keep diagrams clean and proportional
-
Revise important diagrams before the exam
Even in theory questions, diagrams can help improve presentation and clarity of answers.
Preparation Strategy for Class 10 Science Board Exam
To score high marks in the Science board exam:
-
Focus on understanding concepts, not just memorizing.
-
Practice ray diagrams repeatedly.
-
Revise Biology diagrams with correct labels.
-
Watch one-shot revision videos for quick clarity.
-
Solve previous year questions to understand exam patterns.
Consistent practice and proper revision will help students feel confident in the exam hall. Diagrams are easy to mark if prepared well. With structured study and focused revision, students can perform their best in the Class 10 Science Board Exam 2026.